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web版钉钉协议分析

验证是否第一次登陆:

cookie 中的 deviceid

初始化,连接服务器后,发送:

{
    "lwp": "/reg",
    "headers": {
        "cache-header": "token app-key did ua vhost wv",
        "vhost": "WK",
        "ua": "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36 OS(windows/6.1) Browser(chrome/63.0.3239.132) DingWeb/3.6.0 LANG/zh_CN",
        "app-key": "85A09F60A599F5E1867EAB915A8BB07F",
        "wv": "im:3,au:3,sy:4",
        "did": "117851a2126f40aaa2f1a3e2df7c00dc",
        "mid": "804b0002 0"
    },
    "body": null
}
  • 主要字段的数据来源(JS实现):
  1. cache-header: 固定
  2. vhost:固定
  3. ua: 当前浏览器的 navigator.userAgent
  4. app-key:固定为 85A09F60A599F5E1867EAB915A8BB07F
  5. wv: 固定
  6. did: cookie 没有 deviceid 时,由客户端生成,详见下面的 getDid(uuid.v4标准);否则不传该字段,但连接 WebSocketHTTP 请求头应该有包含 Cookie:deviceid=7fc0930dba774fcfa7e1d7aac56fabcd; deviceid_exist=true;
  7. mid: genMid() + " 0"
  • 涉及到的代码段:
var i = 0
  , r = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"];

function genMid() {
    var e = Math.floor(Math.random() * Math.pow(2, 16))
      , t = i++
      , n = "";
    return n += r[e >> 12 & 15],
    n += r[e >> 8 & 15],
    n += r[e >> 4 & 15],
    n += r[15 & e],
    n += r[t >> 12 & 15],
    n += r[t >> 8 & 15],
    n += r[t >> 4 & 15],
    n += r[15 & t]
};

function uuid_v4 () {
    var o = [], i = [], l = {};
    for (var e, t = 0; t < 16; t++)
        0 === (3 & t) && (e = 4294967296 * Math.random()),
            o[t] = e >>> ((3 & t) << 3) & 255;

    for (var u = 0; u < 256; u++)
        i[u] = (u + 256).toString(16).substr(1)


    var n = 0;
    return i[o[n++]] + i[o[n++]] + i[o[n++]] + i[o[n++]] +
        "-" + i[o[n++]] + i[o[n++]] + "-" + i[o[n++]] + i[o[n++]] + "-" + i[o[n++]] + i[o[n++]] + "-" +
        i[o[n++]] + i[o[n++]] + i[o[n++]] + i[o[n++]] + i[o[n++]] + i[o[n++]]
}

function getDid () {
    return uuid_v4().replace(/\-/g, "");
}
对应PHP代码:
function getMid () {
    static $i = 0;

    $r = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'];

    $e = rand(1, 65535);
    $i++;

    return $r[$e >> 12 & 15] .
           $r[$e >> 8 & 15] .
           $r[$e >> 4 & 15] .
           $r[15 & $e] .
           $r[$i >> 12 & 15] .
           $r[$i >> 8 & 15] .
           $r[$i >> 4 & 15] .
           $r[15 & $i];
}

function uuid_v4() {
    return sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x',

      // 32 bits for "time_low"
      mt_rand(0, 0xffff), mt_rand(0, 0xffff),

      // 16 bits for "time_mid"
      mt_rand(0, 0xffff),

      // 16 bits for "time_hi_and_version",
      // four most significant bits holds version number 4
      mt_rand(0, 0x0fff) | 0x4000,

      // 16 bits, 8 bits for "clk_seq_hi_res",
      // 8 bits for "clk_seq_low",
      // two most significant bits holds zero and one for variant DCE1.1
      mt_rand(0, 0x3fff) | 0x8000,

      // 48 bits for "node"
      mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff)
    );
}

function getDid () {
    return str_replace('-', '', uuid_v4());
}

服务器响应注册消息:

{
    "headers": {
        "mid": "804b0002 0",
        "sid": "ac1d503a5a55bf1454bb2724ef29f2f5882550192a20"
    },
    "code": 200
}

输入密码登陆:

{
    "lwp": "/r/Adaptor/LoginI/login",
    "headers": {
        "mid": "2634000f 0"
    },
    "body": [
        {
            "title": "Windows 7 Web", // 最长 20 字节
            "model": "Windows 7",
            "token": "C1515568916640551275078381515568916640194"
        },
        "+86-13900000000", // 登陆手机号
        "这是明文密码",
        "85A09F60A599F5E1867EAB915A8BB07F", // app-key
        null
    ]
}

服务器响应登陆成功的消息:

{
    "headers": {
        "dt": "j",
        "mid": "2634000f 0",
        "sid": "ac1d503a5a55bf1454bb2724ef29f2f5882550192a20"
    },
    "code": 400,
    "body": {
        "reason": "你在新的设备登录钉钉,为了保障你的账户安全,需要使用短信验证码确认",
        "code": "14001"
    }
}

客户端要求发送验证码:

{
    "lwp": "/r/Adaptor/LoginI/sendSmsCode",
    "headers": {
        "mid": "691e0010 0"
    },
    "body": [
        "+86-13900000000" // 登陆手机号
    ]
}

输入验证码:

{
    "lwp": "/r/Adaptor/LoginI/tokenLogin",
    "headers": {
        "mid": "b75d0023 0"
    },
    "body": [
        {
            "title": "Windows 7 Web",
            "model": "Windows 7",
            "token": "C1515568916640551275055381515568916640194"
        },
        "+86-13900000000", // 登陆手机号
        "1111", // 短信验证码
        "85A09F60A599F5E1867EAB915A8BB07F", //app-key
        "0",
        null
    ]
}

用户登陆成功,服务器响应:

{
    "headers": {
        "dt": "j",
        "mid": "b75d0023 0",
        "sid": "ac1d503a5a55bf1454bb2724ef29f2f5882550192a20"
    },
    "code": 200,
    "body": {
        "nickPinyin": "qi",
        "syncProtocol": false,
        "tokenId": "B:45cde49ed06c55fc758fbe1b4a7e7777",
        "openId": 33606666,
        "secretToken": "8reAacn5g=",
        "accessToken": "Gs/Go7jpo=",
        "expiredTime": 1516865322664,
        "nick": "昵称",
        "domain": "dingding",
        "tmpCode": "33405583_E755ADF8-E5A3-42DA-A60C-5555FCFE30B7",
        "appKey": "85A09F60A599F5E1867EAB915A8BB07F",
        "timestamp": "16124915505A584255406478",
        "userProfileExtensionModel": {}, 
        "refreshToken": "c2/kt52S8pvemA=="
    }
}

使用上一步得到的 body.tmpCode 请求服务器设置 cookie

GET https://static.dingtalk.com/media/setCookie?code=33405583_E755ADF8-E5A3-42DA-A60C-5555FCFE30B7&callback=__jp0

订阅消息

{
    "lwp": "/subscribe",
    "headers": {
        "token": "Gs/Go7jpo=", // 登陆成功后服务器推送消息中的 body.accessToken
        "sync": "0,0;0;0;",
        "set-ver": "0",
        "mid": "ab030024 0"
    }
}

服务端响应订阅:

{
    "headers": {
        "reg-sid": "ac1d503a5a55bf1454bb2724efdfdfdfdf5882550192a20",
        "reg-uid": "33400003@dingding",
        "mid": "ab030024 0",
        "uuid": "ggHaACRjNjc2ZmQ3jU5LTQ0MTEtOGQwMS02YWRjYODMCsTMzNDA2NjgzQGRpbmdkaW5n",
        "real-ip": "61.139.59.61",
        "sid": "ac1d503a5a55bf1454bb2724ef29f2f5882550192a20"
    },
    "code": 200
}

获取状态

{
    "lwp": "/r/Sync/getState",
    "headers": {
        "mid": "e4d10004 0"
    },
    "body": [
        {
            "pts": 0,
            "highPts": 0,
            "seq": 0,
            "timestamp": 0,
            "tooLong2Tag": ""
        }
    ]
}

服务端响应获取的状态结果:

{
    "headers": {
        "dt": "j",
        "mid": "e4d10004 0", // 和上面获取状态时发送的 mid 一样,表明是响应的数据
        "sid": "0b8319955a57146440a3207de6bf969793baf23b6490"
    },
    "code": 200,
    "body": {
        "tooLong2Tag": "center,1",
        "topic": "sync",
        "highPts": 1515655826286000,
        "pts": 1515623661092000,
        "seq": 0,
        "timestamp": 1515656293128
    }
}

猜测是获取未读消息,经过这两步后,新消息才会主动通知给客户端

{
    "lwp": "/r/Sync/getDiff",
    "headers": {
        "mid": "2d7b0013 0"
    },
    "body": [
        //这里的数据就是上一步响应的结果
        {
            "tooLong2Tag": "center,1",
            "topic": "sync",
            "highPts": 1515655826286000,
            "pts": 1515623661092000,
            "seq": 0,
            "timestamp": 1515656293128
        }
    ]
}

确认收到未读消息

{
    "lwp": "/r/Sync/ackDiff",
    "headers": {
        "mid": "022b0015 0"
    },
    "body": [
        // 还是上面获取状态时的响应结果
        {
            "tooLong2Tag": "center,1",
            "topic": "sync",
            "highPts": 1515655826286000,
            "pts": 1515623661092000,
            "seq": 0,
            "timestamp": 1515656293128
        }
    ]
}

标记消息为已读

{
    "lwp": "/r/IDLMessageStatus/updateToView",
    "headers": {
        "mid": "6e900034 0"
    },
    "body": [
        "33666666:3833666665", // 上一步得到的 发送者uid:接收者uid
        49827229684 // 上一步得到的消息ID
    ]
}

完美的背景图全屏效果

先看看效果

未标题-1.jpg

需求

  1. 图片以背景的形式铺满整个屏幕,不留空白区域
  2. 保持图像的纵横比(图片不变形)
  3. 图片居中
  4. 不出现滚动条

最简单的实现

html{
	height: 100%;
	background: url(1.jpg);
	background-size: cover;
}

但是使用该方法后,当屏幕比例和图片比例不一样时,背景的右边或下边会隐藏掉,不符合我们的图片居中的需求。因此我们再结合JS进行偏移量的计算:

完整代码

<!DOCTYPE html>
<html>
<head>
	<style>
		* {
			padding: 0;
			margin: 0;
		}

		html, body {
			height: 100%;
		}

		.demo {
			height: inherit;
			background: url(http://imgs.meimeinice.com/imgs/f6964325bad452acd582f58db7ce2e9d.jpg) no-repeat;
			background-size: cover;
		}
	</style>
	<script src="http://libs.baidu.com/jquery/1.9.1/jquery.min.js"></script>
	<meta charset="utf-8">
	<title>background</title>
</head>
<body>
	<div class="demo"></div>
</body>
<script>
	$(function () {
		var imgSize = {},
			img = new Image(),
			url = $('.demo').css('background-image').substr(5);

		img.src = url.substr(0, url.length - 2);;
		img.onload = function () {
			imgSize = {
				w: img.width,
				h: img.height
			};
			$(window).trigger('resize');
		};

		$(window).on('resize', function () {
			if (!imgSize) {
				return;
			}
			var node = $('.demo'),
				nodeWidth = node.width(),
				nodeHeight = node.height(),
				imgRate = imgSize.w / imgSize.h,
				nodeRate = nodeWidth / nodeHeight,
				offset;

			//图片比容器的比率大,容器的宽度较窄,图片向左隐藏
			if (imgSize.w > nodeWidth && imgRate > nodeRate) {
				offset = (nodeWidth - imgRate * nodeHeight) / 2;
				node.css('backgroundPosition', offset + 'px 0');
			}

			//向上隐藏
			if (imgSize.h > nodeHeight && imgRate < nodeRate) {
				offset = (nodeHeight - nodeWidth / imgRate) / 2;
				node.css('background-position', '0 ' + offset + 'px');
			}
		});

	});
</script>
</html>

回归简单

由于前面写CSS的时候没有想到背景居中,而去写了一大段的JS的配合,结果最近发现在用cover的同时再配合背景居中就能搞定:

html{
	height: 100%;
	background: url(1.jpg) no-repeat center;
	background-size: cover;
}

jquery.validate修改版

  • 新增了正则表达式验证和自定义函数验证的方法
/*! jQuery Validation Plugin - v1.11.1 - 3/22/2013\n* https://github.com/jzaefferer/jquery-validation
* Copyright (c) 2013 Jörn Zaefferer; Licensed MIT */
/*!
 * jQuery Validation Plugin 1.11.1
 *
 * http://bassistance.de/jquery-plugins/jquery-plugin-validation/
 * http://docs.jquery.com/Plugins/Validation
 *
 * Copyright 2013 Jörn Zaefferer
 * Released under the MIT license:
 *   http://www.opensource.org/licenses/mit-license.php
 */

(function($) {

    $.extend($.fn, {
        // http://docs.jquery.com/Plugins/Validation/validate
        validate: function( options ) {

            // if nothing is selected, return nothing; can't chain anyway
            if ( !this.length ) {
                if ( options &amp;&amp; options.debug &amp;&amp; window.console ) {
                    console.warn( "Nothing selected, can't validate, returning nothing." );
                }
                return;
            }

            // check if a validator for this form was already created
            var validator = $.data( this[0], "validator" );
            if ( validator ) {
                return validator;
            }

            // Add novalidate tag if HTML5.
            this.attr( "novalidate", "novalidate" );

            validator = new $.validator( options, this[0] );
            $.data( this[0], "validator", validator );

            if ( validator.settings.onsubmit ) {

                this.validateDelegate( ":submit", "click", function( event ) {
                    if ( validator.settings.submitHandler ) {
                        validator.submitButton = event.target;
                    }
                    // allow suppressing validation by adding a cancel class to the submit button
                    if ( $(event.target).hasClass("cancel") ) {
                        validator.cancelSubmit = true;
                    }

                    // allow suppressing validation by adding the html5 formnovalidate attribute to the submit button
                    if ( $(event.target).attr("formnovalidate") !== undefined ) {
                        validator.cancelSubmit = true;
                    }
                });

                // validate the form on submit
                this.submit( function( event ) {
                    if ( validator.settings.debug ) {
                        // prevent form submit to be able to see console output
                        event.preventDefault();
                    }
                    function handle() {
                        var hidden;
                        if ( validator.settings.submitHandler ) {
                            if ( validator.submitButton ) {
                                // insert a hidden input as a replacement for the missing submit button
                                hidden = $("&lt;input type='hidden'/&gt;").attr("name", validator.submitButton.name).val( $(validator.submitButton).val() ).appendTo(validator.currentForm);
                            }
                            validator.settings.submitHandler.call( validator, validator.currentForm, event );
                            if ( validator.submitButton ) {
                                // and clean up afterwards; thanks to no-block-scope, hidden can be referenced
                                hidden.remove();
                            }
                            return false;
                        }
                        return true;
                    }

                    // prevent submit for invalid forms or custom submit handlers
                    if ( validator.cancelSubmit ) {
                        validator.cancelSubmit = false;
                        return handle();
                    }
                    if ( validator.form() ) {
                        if ( validator.pendingRequest ) {
                            validator.formSubmitted = true;
                            return false;
                        }
                        return handle();
                    } else {
                        validator.focusInvalid();
                        return false;
                    }
                });
            }

            return validator;
        },
        // http://docs.jquery.com/Plugins/Validation/valid
        valid: function() {
            if ( $(this[0]).is("form")) {
                return this.validate().form();
            } else {
                var valid = true;
                var validator = $(this[0].form).validate();
                this.each(function() {
                    valid = valid &amp;&amp; validator.element(this);
                });
                return valid;
            }
        },
        // attributes: space seperated list of attributes to retrieve and remove
        removeAttrs: function( attributes ) {
            var result = {},
                $element = this;
            $.each(attributes.split(/\s/), function( index, value ) {
                result[value] = $element.attr(value);
                $element.removeAttr(value);
            });
            return result;
        },
        // http://docs.jquery.com/Plugins/Validation/rules
        rules: function( command, argument ) {
            var element = this[0];

            if ( command ) {
                var settings = $.data(element.form, "validator").settings;
                var staticRules = settings.rules;
                var existingRules = $.validator.staticRules(element);
                switch(command) {
                    case "add":
                        $.extend(existingRules, $.validator.normalizeRule(argument));
                        // remove messages from rules, but allow them to be set separetely
                        delete existingRules.messages;
                        staticRules[element.name] = existingRules;
                        if ( argument.messages ) {
                            settings.messages[element.name] = $.extend( settings.messages[element.name], argument.messages );
                        }
                        break;
                    case "remove":
                        if ( !argument ) {
                            delete staticRules[element.name];
                            return existingRules;
                        }
                        var filtered = {};
                        $.each(argument.split(/\s/), function( index, method ) {
                            filtered[method] = existingRules[method];
                            delete existingRules[method];
                        });
                        return filtered;
                }
            }

            var data = $.validator.normalizeRules(
                $.extend(
                    {},
                    $.validator.classRules(element),
                    $.validator.attributeRules(element),
                    $.validator.dataRules(element),
                    $.validator.staticRules(element)
                ), element);

            // make sure required is at front
            if ( data.required ) {
                var param = data.required;
                delete data.required;
                data = $.extend({required: param}, data);
            }

            return data;
        }
    });

// Custom selectors
    $.extend($.expr[":"], {
        // http://docs.jquery.com/Plugins/Validation/blank
        blank: function( a ) { return !$.trim("" + $(a).val()); },
        // http://docs.jquery.com/Plugins/Validation/filled
        filled: function( a ) { return !!$.trim("" + $(a).val()); },
        // http://docs.jquery.com/Plugins/Validation/unchecked
        unchecked: function( a ) { return !$(a).prop("checked"); }
    });

// constructor for validator
    $.validator = function( options, form ) {
        this.settings = $.extend( true, {}, $.validator.defaults, options );
        this.currentForm = form;
        this.init();
    };

    $.validator.format = function( source, params ) {
        if ( arguments.length === 1 ) {
            return function() {
                var args = $.makeArray(arguments);
                args.unshift(source);
                return $.validator.format.apply( this, args );
            };
        }
        if ( arguments.length &gt; 2 &amp;&amp; params.constructor !== Array  ) {
            params = $.makeArray(arguments).slice(1);
        }
        if ( params.constructor !== Array ) {
            params = [ params ];
        }
        $.each(params, function( i, n ) {
            source = source.replace( new RegExp("\\{" + i + "\\}", "g"), function() {
                return n;
            });
        });
        return source;
    };

    $.extend($.validator, {

        defaults: {
            messages: {},
            groups: {},
            rules: {},
            errorClass: "error",
            validClass: "valid",
            errorElement: "label",
            focusInvalid: true,
            errorContainer: $([]),
            errorLabelContainer: $([]),
            onsubmit: true,
            ignore: ":hidden",
            ignoreTitle: false,
            onfocusin: function( element, event ) {
                this.lastActive = element;

                // hide error label and remove error class on focus if enabled
                if ( this.settings.focusCleanup &amp;&amp; !this.blockFocusCleanup ) {
                    if ( this.settings.unhighlight ) {
                        this.settings.unhighlight.call( this, element, this.settings.errorClass, this.settings.validClass );
                    }
                    this.addWrapper(this.errorsFor(element)).hide();
                }
            },
            onfocusout: function( element, event ) {
                if ( !this.checkable(element) &amp;&amp; (element.name in this.submitted || !this.optional(element)) ) {
                    this.element(element);
                }
            },
            onkeyup: function( element, event ) {
                if ( event.which === 9 &amp;&amp; this.elementValue(element) === "" ) {
                    return;

                }
                /**
                 * todo:lastActive对比lastElement
                 * 1.10版 else if ( element.name in this.submitted || element === this.lastActive ) {
                 * 1.11版 else if ( element.name in this.submitted || element === this.lastElement ) {
                 * 1.10版可以在第一次填写输入框时捕获keyup事件进行验证
                 * 1.11版需要在失去焦点验证后再次填写才会有keyup事件验证
                 */
                else if ( element.name in this.submitted || element === this.lastActive ) {
                    this.element(element);
                }
            },
            onclick: function( element, event ) {
                // click on selects, radiobuttons and checkboxes
                if ( element.name in this.submitted ) {
                    this.element(element);
                }
                // or option elements, check parent select in that case
                else if ( element.parentNode.name in this.submitted ) {
                    this.element(element.parentNode);
                }
            },
            highlight: function( element, errorClass, validClass ) {
                if ( element.type === "radio" ) {
                    this.findByName(element.name).addClass(errorClass).removeClass(validClass);
                } else {
                    $(element).addClass(errorClass).removeClass(validClass);
                }
            },
            unhighlight: function( element, errorClass, validClass ) {
                if ( element.type === "radio" ) {
                    this.findByName(element.name).removeClass(errorClass).addClass(validClass);
                } else {
                    $(element).removeClass(errorClass).addClass(validClass);
                }
            }
        },

        // http://docs.jquery.com/Plugins/Validation/Validator/setDefaults
        setDefaults: function( settings ) {
            $.extend( $.validator.defaults, settings );
        },

        messages: {
            required: "该字段是必须的",
            remote: "请修正该字段",
            email: "请输入正确格式的电子邮件",
            url: "请输入合法的网址",
            date: "请输入合法的日期",
            dateISO: "请输入合法的日期 (ISO).",
            number: "请输入合法的数字",
            digits: "只能输入整数",
            creditcard: "请输入合法的信用卡号",
            equalTo: "请再次输入相同的值",
            accept: "请输入拥有合法后缀名的字符串",
            maxlength: $.validator.format("请输入一个长度最多是 {0} 的字符串"),
            minlength: $.validator.format("请输入一个长度最少是 {0} 的字符串"),
            rangelength: $.validator.format("请输入一个长度介于 {0} 和 {1} 之间的字符串"),
            range: $.validator.format("请输入一个介于 {0} 和 {1} 之间的值"),
            max: $.validator.format("请输入一个最大为 {0} 的值"),
            min: $.validator.format("请输入一个最小为 {0} 的值")
        },

        autoCreateRanges: false,

        prototype: {

            init: function() {
                this.labelContainer = $(this.settings.errorLabelContainer);
                this.errorContext = this.labelContainer.length &amp;&amp; this.labelContainer || $(this.currentForm);
                this.containers = $(this.settings.errorContainer).add( this.settings.errorLabelContainer );
                this.submitted = {};
                this.valueCache = {};
                this.pendingRequest = 0;
                this.pending = {};
                this.invalid = {};
                this.reset();

                var groups = (this.groups = {});
                $.each(this.settings.groups, function( key, value ) {
                    if ( typeof value === "string" ) {
                        value = value.split(/\s/);
                    }
                    $.each(value, function( index, name ) {
                        groups[name] = key;
                    });
                });
                var rules = this.settings.rules;
                $.each(rules, function( key, value ) {
                    rules[key] = $.validator.normalizeRule(value);
                });

                function delegate(event) {
                    var validator = $.data(this[0].form, "validator"),
                        eventType = "on" + event.type.replace(/^validate/, "");
                    if ( validator.settings[eventType] ) {
                        validator.settings[eventType].call(validator, this[0], event);
                    }
                }
                $(this.currentForm)
                    .validateDelegate(":text, [type='password'], [type='file'], select, textarea, " +
                        "[type='number'], [type='search'] ,[type='tel'], [type='url'], " +
                        "[type='email'], [type='datetime'], [type='date'], [type='month'], " +
                        "[type='week'], [type='time'], [type='datetime-local'], " +
                        "[type='range'], [type='color'] ",
                        "focusin focusout keyup", delegate)
                    .validateDelegate("[type='radio'], [type='checkbox'], select, option", "click", delegate);

                if ( this.settings.invalidHandler ) {
                    $(this.currentForm).bind("invalid-form.validate", this.settings.invalidHandler);
                }
            },

            // http://docs.jquery.com/Plugins/Validation/Validator/form
            form: function() {
                this.checkForm();
                $.extend(this.submitted, this.errorMap);
                this.invalid = $.extend({}, this.errorMap);
                if ( !this.valid() ) {
                    $(this.currentForm).triggerHandler("invalid-form", [this]);
                }
                this.showErrors();
                return this.valid();
            },

            checkForm: function() {
                this.prepareForm();
                for ( var i = 0, elements = (this.currentElements = this.elements()); elements[i]; i++ ) {
                    this.check( elements[i] );
                }
                return this.valid();
            },

            // http://docs.jquery.com/Plugins/Validation/Validator/element
            element: function( element ) {
                element = this.validationTargetFor( this.clean( element ) );
                this.lastElement = element;
                this.prepareElement( element );
                this.currentElements = $(element);
                var result = this.check( element ) !== false;
                if ( result ) {
                    delete this.invalid[element.name];
                } else {
                    this.invalid[element.name] = true;
                }
                if ( !this.numberOfInvalids() ) {
                    // Hide error containers on last error
                    this.toHide = this.toHide.add( this.containers );
                }
                this.showErrors();
                return result;
            },

            // http://docs.jquery.com/Plugins/Validation/Validator/showErrors
            showErrors: function( errors ) {
                if ( errors ) {
                    // add items to error list and map
                    $.extend( this.errorMap, errors );
                    this.errorList = [];
                    for ( var name in errors ) {
                        this.errorList.push({
                            message: errors[name],
                            element: this.findByName(name)[0]
                        });
                    }
                    // remove items from success list
                    this.successList = $.grep( this.successList, function( element ) {
                        return !(element.name in errors);
                    });
                }
                if ( this.settings.showErrors ) {
                    this.settings.showErrors.call( this, this.errorMap, this.errorList );
                } else {
                    this.defaultShowErrors();
                }
            },

            // http://docs.jquery.com/Plugins/Validation/Validator/resetForm
            resetForm: function() {
                if ( $.fn.resetForm ) {
                    $(this.currentForm).resetForm();
                }
                this.submitted = {};
                this.lastElement = null;
                this.prepareForm();
                this.hideErrors();
                this.elements().removeClass( this.settings.errorClass ).removeData( "previousValue" );
            },

            numberOfInvalids: function() {
                return this.objectLength(this.invalid);
            },

            objectLength: function( obj ) {
                var count = 0;
                for ( var i in obj ) {
                    count++;
                }
                return count;
            },

            hideErrors: function() {
                this.addWrapper( this.toHide ).hide();
            },

            valid: function() {
                return this.size() === 0;
            },

            size: function() {
                return this.errorList.length;
            },

            focusInvalid: function() {
                if ( this.settings.focusInvalid ) {
                    try {
                        $(this.findLastActive() || this.errorList.length &amp;&amp; this.errorList[0].element || [])
                            .filter(":visible")
                            .focus()
                            // manually trigger focusin event; without it, focusin handler isn't called, findLastActive won't have anything to find
                            .trigger("focusin");
                    } catch(e) {
                        // ignore IE throwing errors when focusing hidden elements
                    }
                }
            },

            findLastActive: function() {
                var lastActive = this.lastActive;
                return lastActive &amp;&amp; $.grep(this.errorList, function( n ) {
                    return n.element.name === lastActive.name;
                }).length === 1 &amp;&amp; lastActive;
            },

            elements: function() {
                var validator = this,
                    rulesCache = {};

                // select all valid inputs inside the form (no submit or reset buttons)
                return $(this.currentForm)
                    .find("input, select, textarea")
                    .not(":submit, :reset, :image, [disabled]")
                    .not( this.settings.ignore )
                    .filter(function() {
                        if ( !this.name &amp;&amp; validator.settings.debug &amp;&amp; window.console ) {
                            console.error( "%o has no name assigned", this);
                        }

                        // select only the first element for each name, and only those with rules specified
                        if ( this.name in rulesCache || !validator.objectLength($(this).rules()) ) {
                            return false;
                        }

                        rulesCache[this.name] = true;
                        return true;
                    });
            },

            clean: function( selector ) {
                return $(selector)[0];
            },

            errors: function() {
                var errorClass = this.settings.errorClass.replace(" ", ".");
                return $(this.settings.errorElement + "." + errorClass, this.errorContext);
            },

            reset: function() {
                this.successList = [];
                this.errorList = [];
                this.errorMap = {};
                this.toShow = $([]);
                this.toHide = $([]);
                this.currentElements = $([]);
            },

            prepareForm: function() {
                this.reset();
                this.toHide = this.errors().add( this.containers );
            },

            prepareElement: function( element ) {
                this.reset();
                this.toHide = this.errorsFor(element);
            },

            elementValue: function( element ) {
                var type = $(element).attr("type"),
                    val = $(element).val();

                if ( type === "radio" || type === "checkbox" ) {
                    return $("input[name='" + $(element).attr("name") + "']:checked").val();
                }

                if ( typeof val === "string" ) {
                    return val.replace(/\r/g, "");
                }
                return val;
            },

            check: function( element ) {
                element = this.validationTargetFor( this.clean( element ) );

                var rules = $(element).rules();
                var dependencyMismatch = false;
                var val = this.elementValue(element);
                var result;

                for (var method in rules ) {
                    var rule = { method: method, parameters: rules[method] };
                    try {

                        result = $.validator.methods[method].call( this, val, element, rule.parameters );

                        // if a method indicates that the field is optional and therefore valid,
                        // don't mark it as valid when there are no other rules
                        if ( result === "dependency-mismatch" ) {
                            dependencyMismatch = true;
                            continue;
                        }
                        dependencyMismatch = false;

                        if ( result === "pending" ) {
                            this.toHide = this.toHide.not( this.errorsFor(element) );
                            return;
                        }

                        if ( !result ) {
                            this.formatAndAdd( element, rule );
                            return false;
                        }
                    } catch(e) {
                        if ( this.settings.debug &amp;&amp; window.console ) {
                            console.log( "Exception occurred when checking element " + element.id + ", check the '" + rule.method + "' method.", e );
                        }
                        throw e;
                    }
                }
                if ( dependencyMismatch ) {
                    return;
                }
                if ( this.objectLength(rules) ) {
                    this.successList.push(element);
                }
                return true;
            },

            // return the custom message for the given element and validation method
            // specified in the element's HTML5 data attribute
            customDataMessage: function( element, method ) {
                return $(element).data("msg-" + method.toLowerCase()) || (element.attributes &amp;&amp; $(element).attr("data-msg-" + method.toLowerCase()));
            },

            // return the custom message for the given element name and validation method
            customMessage: function( name, method ) {
                var m = this.settings.messages[name];
                return m &amp;&amp; (m.constructor === String ? m : m[method]);
            },

            // return the first defined argument, allowing empty strings
            findDefined: function() {
                for(var i = 0; i &lt; arguments.length; i++) {
                    if ( arguments[i] !== undefined ) {
                        return arguments[i];
                    }
                }
                return undefined;
            },

            defaultMessage: function( element, method ) {
                return this.findDefined(
                    this.customMessage( element.name, method ),
                    this.customDataMessage( element, method ),
                    // title is never undefined, so handle empty string as undefined
                    !this.settings.ignoreTitle &amp;&amp; element.title || undefined,
                    $.validator.messages[method],
                    "&lt;strong&gt;Warning: No message defined for " + element.name + "&lt;/strong&gt;"
                );
            },

            formatAndAdd: function( element, rule ) {
                var message = this.defaultMessage( element, rule.method ),
                    theregex = /\$?\{(\d+)\}/g;
                if ( typeof message === "function" ) {
                    message = message.call(this, rule.parameters, element);
                } else if (theregex.test(message)) {
                    message = $.validator.format(message.replace(theregex, "{$1}"), rule.parameters);
                }
                this.errorList.push({
                    message: message,
                    element: element
                });

                this.errorMap[element.name] = message;
                this.submitted[element.name] = message;
            },

            addWrapper: function( toToggle ) {
                if ( this.settings.wrapper ) {
                    toToggle = toToggle.add( toToggle.parent( this.settings.wrapper ) );
                }
                return toToggle;
            },

            defaultShowErrors: function() {
                var i, elements;
                for ( i = 0; this.errorList[i]; i++ ) {
                    var error = this.errorList[i];
                    if ( this.settings.highlight ) {
                        this.settings.highlight.call( this, error.element, this.settings.errorClass, this.settings.validClass );
                    }
                    this.showLabel( error.element, error.message );
                }
                if ( this.errorList.length ) {
                    this.toShow = this.toShow.add( this.containers );
                }
                if ( this.settings.success ) {
                    for ( i = 0; this.successList[i]; i++ ) {
                        this.showLabel( this.successList[i] );
                    }
                }
                if ( this.settings.unhighlight ) {
                    for ( i = 0, elements = this.validElements(); elements[i]; i++ ) {
                        this.settings.unhighlight.call( this, elements[i], this.settings.errorClass, this.settings.validClass );
                    }
                }
                this.toHide = this.toHide.not( this.toShow );
                this.hideErrors();
                this.addWrapper( this.toShow ).show();
            },

            validElements: function() {
                return this.currentElements.not(this.invalidElements());
            },

            invalidElements: function() {
                return $(this.errorList).map(function() {
                    return this.element;
                });
            },

            showLabel: function( element, message ) {
                var label = this.errorsFor( element );
                if ( label.length ) {
                    // refresh error/success class
                    label.removeClass( this.settings.validClass ).addClass( this.settings.errorClass );
                    // replace message on existing label
                    label.html(message);
                } else {
                    // create label
                    label = $("&lt;" + this.settings.errorElement + "&gt;")
                        .attr("for", this.idOrName(element))
                        .addClass(this.settings.errorClass)
                        .html(message || "");
                    if ( this.settings.wrapper ) {
                        // make sure the element is visible, even in IE
                        // actually showing the wrapped element is handled elsewhere
                        label = label.hide().show().wrap("&lt;" + this.settings.wrapper + "/&gt;").parent();
                    }
                    if ( !this.labelContainer.append(label).length ) {
                        if ( this.settings.errorPlacement ) {
                            this.settings.errorPlacement(label, $(element) );
                        } else {
                            label.insertAfter(element);
                        }
                    }
                }
                if ( !message &amp;&amp; this.settings.success ) {
                    label.text("");
                    if ( typeof this.settings.success === "string" ) {
                        label.addClass( this.settings.success );
                    } else {
                        this.settings.success( label, element );
                    }
                }
                this.toShow = this.toShow.add(label);
            },

            errorsFor: function( element ) {
                var name = this.idOrName(element);
                return this.errors().filter(function() {
                    return $(this).attr("for") === name;
                });
            },

            idOrName: function( element ) {
                return this.groups[element.name] || (this.checkable(element) ? element.name : element.id || element.name);
            },

            validationTargetFor: function( element ) {
                // if radio/checkbox, validate first element in group instead
                if ( this.checkable(element) ) {
                    element = this.findByName( element.name ).not(this.settings.ignore)[0];
                }
                return element;
            },

            checkable: function( element ) {
                return (/radio|checkbox/i).test(element.type);
            },

            findByName: function( name ) {
                return $(this.currentForm).find("[name='" + name + "']");
            },

            getLength: function( value, element ) {
                switch( element.nodeName.toLowerCase() ) {
                    case "select":
                        return $("option:selected", element).length;
                    case "input":
                        if ( this.checkable( element) ) {
                            return this.findByName(element.name).filter(":checked").length;
                        }
                }
                return value.length;
            },

            depend: function( param, element ) {
                return this.dependTypes[typeof param] ? this.dependTypes[typeof param](param, element) : true;
            },

            dependTypes: {
                "boolean": function( param, element ) {
                    return param;
                },
                "string": function( param, element ) {
                    return !!$(param, element.form).length;
                },
                "function": function( param, element ) {
                    return param(element);
                }
            },

            optional: function( element ) {
                var val = this.elementValue(element);
                return !$.validator.methods.required.call(this, val, element) &amp;&amp; "dependency-mismatch";
            },

            startRequest: function( element ) {
                if ( !this.pending[element.name] ) {
                    this.pendingRequest++;
                    this.pending[element.name] = true;
                }
            },

            stopRequest: function( element, valid ) {
                this.pendingRequest--;
                // sometimes synchronization fails, make sure pendingRequest is never &lt; 0
                if ( this.pendingRequest &lt; 0 ) {
                    this.pendingRequest = 0;
                }
                delete this.pending[element.name];
                if ( valid &amp;&amp; this.pendingRequest === 0 &amp;&amp; this.formSubmitted &amp;&amp; this.form() ) {
                    $(this.currentForm).submit();
                    this.formSubmitted = false;
                } else if (!valid &amp;&amp; this.pendingRequest === 0 &amp;&amp; this.formSubmitted) {
                    $(this.currentForm).triggerHandler("invalid-form", [this]);
                    this.formSubmitted = false;
                }
            },

            previousValue: function( element ) {
                return $.data(element, "previousValue") || $.data(element, "previousValue", {
                    old: null,
                    valid: true,
                    message: this.defaultMessage( element, "remote" )
                });
            }

        },

        classRuleSettings: {
            required: {required: true},
            email: {email: true},
            url: {url: true},
            date: {date: true},
            dateISO: {dateISO: true},
            number: {number: true},
            digits: {digits: true},
            creditcard: {creditcard: true}
        },

        addClassRules: function( className, rules ) {
            if ( className.constructor === String ) {
                this.classRuleSettings[className] = rules;
            } else {
                $.extend(this.classRuleSettings, className);
            }
        },

        classRules: function( element ) {
            var rules = {};
            var classes = $(element).attr("class");
            if ( classes ) {
                $.each(classes.split(" "), function() {
                    if ( this in $.validator.classRuleSettings ) {
                        $.extend(rules, $.validator.classRuleSettings[this]);
                    }
                });
            }
            return rules;
        },

        attributeRules: function( element ) {
            var rules = {};
            var $element = $(element);
            var type = $element[0].getAttribute("type");

            for (var method in $.validator.methods) {
                var value;

                // support for &lt;input required&gt; in both html5 and older browsers
                if ( method === "required" ) {
                    value = $element.get(0).getAttribute(method);
                    // Some browsers return an empty string for the required attribute
                    // and non-HTML5 browsers might have required="" markup
                    if ( value === "" ) {
                        value = true;
                    }
                    // force non-HTML5 browsers to return bool
                    value = !!value;
                } else {
                    value = $element.attr(method);
                }

                // convert the value to a number for number inputs, and for text for backwards compability
                // allows type="date" and others to be compared as strings
                if ( /min|max/.test( method ) &amp;&amp; ( type === null || /number|range|text/.test( type ) ) ) {
                    value = Number(value);
                }

                if ( value ) {
                    rules[method] = value;
                } else if ( type === method &amp;&amp; type !== 'range' ) {
                    // exception: the jquery validate 'range' method
                    // does not test for the html5 'range' type
                    rules[method] = true;
                }
            }

            // maxlength may be returned as -1, 2147483647 (IE) and 524288 (safari) for text inputs
            if ( rules.maxlength &amp;&amp; /-1|2147483647|524288/.test(rules.maxlength) ) {
                delete rules.maxlength;
            }

            return rules;
        },

        dataRules: function( element ) {
            var method, value,
                rules = {}, $element = $(element);
            for (method in $.validator.methods) {
                value = $element.data("rule-" + method.toLowerCase());
                if ( value !== undefined ) {
                    rules[method] = value;
                }
            }
            return rules;
        },

        staticRules: function( element ) {
            var rules = {};
            var validator = $.data(element.form, "validator");
            if ( validator.settings &amp;&amp; validator.settings.rules ) {
                rules = $.validator.normalizeRule(validator.settings.rules[element.name]) || {};
            }
            return rules;
        },

        normalizeRules: function( rules, element ) {
            // handle dependency check
            $.each(rules, function( prop, val ) {
                // ignore rule when param is explicitly false, eg. required:false
                if ( val === false ) {
                    delete rules[prop];
                    return;
                }
                if ( val.param || val.depends ) {
                    var keepRule = true;
                    switch (typeof val.depends) {
                        case "string":
                            keepRule = !!$(val.depends, element.form).length;
                            break;
                        case "function":
                            keepRule = val.depends.call(element, element);
                            break;
                    }
                    if ( keepRule ) {
                        rules[prop] = val.param !== undefined ? val.param : true;
                    } else {
                        delete rules[prop];
                    }
                }
            });

            // evaluate parameters
            /*$.each(rules, function( rule, parameter ) {
             rules[rule] = $.isFunction(parameter) ? parameter(element) : parameter;
             });*/

            // clean number parameters
            $.each(['minlength', 'maxlength'], function() {
                if ( rules[this] ) {
                    rules[this] = Number(rules[this]);
                }
            });
            $.each(['rangelength', 'range'], function() {
                var parts;
                if ( rules[this] ) {
                    if ( $.isArray(rules[this]) ) {
                        rules[this] = [Number(rules[this][0]), Number(rules[this][1])];
                    } else if ( typeof rules[this] === "string" ) {
                        parts = rules[this].split(/[\s,]+/);
                        rules[this] = [Number(parts[0]), Number(parts[1])];
                    }
                }
            });

            if ( $.validator.autoCreateRanges ) {
                // auto-create ranges
                if ( rules.min &amp;&amp; rules.max ) {
                    rules.range = [rules.min, rules.max];
                    delete rules.min;
                    delete rules.max;
                }
                if ( rules.minlength &amp;&amp; rules.maxlength ) {
                    rules.rangelength = [rules.minlength, rules.maxlength];
                    delete rules.minlength;
                    delete rules.maxlength;
                }
            }

            return rules;
        },

        // Converts a simple string to a {string: true} rule, e.g., "required" to {required:true}
        normalizeRule: function( data ) {
            if ( typeof data === "string" ) {
                var transformed = {};
                $.each(data.split(/\s/), function() {
                    transformed[this] = true;
                });
                data = transformed;
            }

            if ($.isFunction(data)) {
                data = {func: data};
            }
            return data;
        },

        // http://docs.jquery.com/Plugins/Validation/Validator/addMethod
        addMethod: function( name, method, message ) {
            $.validator.methods[name] = method;
            $.validator.messages[name] = message !== undefined ? message : $.validator.messages[name];
            if ( method.length &lt; 3 ) {
                $.validator.addClassRules(name, $.validator.normalizeRule(name));
            }
        },

        methods: {

            // http://docs.jquery.com/Plugins/Validation/Methods/required
            required: function( value, element, param ) {
                // check if dependency is met
                if ( !this.depend(param, element) ) {
                    return "dependency-mismatch";
                }
                if ( element.nodeName.toLowerCase() === "select" ) {
                    // could be an array for select-multiple or a string, both are fine this way
                    var val = $(element).val();
                    return val &amp;&amp; val.length &gt; 0;
                }
                if ( this.checkable(element) ) {
                    return this.getLength(value, element) &gt; 0;
                }
                return $.trim(value).length &gt; 0;
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/email
            email: function( value, element ) {
                // contributed by Scott Gonzalez: http://projects.scottsplayground.com/email_address_validation/
                return this.optional(element) || /^((([a-z]|\d|[!#\$%&amp;'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&amp;'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))$/i.test(value);
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/url
            url: function( value, element ) {
                // contributed by Scott Gonzalez: http://projects.scottsplayground.com/iri/
                return this.optional(element) || /^(https?|s?ftp):\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&amp;'\(\)\*\+,;=]|:)*@)?(((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?)(:\d*)?)(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&amp;'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&amp;'\(\)\*\+,;=]|:|@)*)*)?)?(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&amp;'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&amp;'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/i.test(value);
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/date
            date: function( value, element ) {
                return this.optional(element) || !/Invalid|NaN/.test(new Date(value).toString());
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/dateISO
            dateISO: function( value, element ) {
                return this.optional(element) || /^\d{4}[\/\-]\d{1,2}[\/\-]\d{1,2}$/.test(value);
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/number
            number: function( value, element ) {
                return this.optional(element) || /^-?(?:\d+|\d{1,3}(?:,\d{3})+)?(?:\.\d+)?$/.test(value);
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/digits
            digits: function( value, element ) {
                return this.optional(element) || /^\d+$/.test(value);
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/creditcard
            // based on http://en.wikipedia.org/wiki/Luhn
            creditcard: function( value, element ) {
                if ( this.optional(element) ) {
                    return "dependency-mismatch";
                }
                // accept only spaces, digits and dashes
                if ( /[^0-9 \-]+/.test(value) ) {
                    return false;
                }
                var nCheck = 0,
                    nDigit = 0,
                    bEven = false;

                value = value.replace(/\D/g, "");

                for (var n = value.length - 1; n &gt;= 0; n--) {
                    var cDigit = value.charAt(n);
                    nDigit = parseInt(cDigit, 10);
                    if ( bEven ) {
                        if ( (nDigit *= 2) &gt; 9 ) {
                            nDigit -= 9;
                        }
                    }
                    nCheck += nDigit;
                    bEven = !bEven;
                }

                return (nCheck % 10) === 0;
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/minlength
            minlength: function( value, element, param ) {
                var length = $.isArray( value ) ? value.length : this.getLength($.trim(value), element);
                return this.optional(element) || length &gt;= param;
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/maxlength
            maxlength: function( value, element, param ) {
                var length = $.isArray( value ) ? value.length : this.getLength($.trim(value), element);
                return this.optional(element) || length &lt;= param;
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/rangelength
            rangelength: function( value, element, param ) {
                var length = $.isArray( value ) ? value.length : this.getLength($.trim(value), element);
                return this.optional(element) || ( length &gt;= param[0] &amp;&amp; length &lt;= param[1] );
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/min
            min: function( value, element, param ) {
                return this.optional(element) || value &gt;= param;
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/max
            max: function( value, element, param ) {
                return this.optional(element) || value &lt;= param;
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/range
            range: function( value, element, param ) {
                return this.optional(element) || ( value &gt;= param[0] &amp;&amp; value &lt;= param[1] );
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/equalTo
            equalTo: function( value, element, param ) {
                // bind to the blur event of the target in order to revalidate whenever the target field is updated
                // TODO find a way to bind the event just once, avoiding the unbind-rebind overhead
                var target = $(param);
                if ( this.settings.onfocusout ) {
                    target.unbind(".validate-equalTo").bind("blur.validate-equalTo", function() {
                        $(element).valid();
                    });
                }
                return value === target.val();
            },

            // http://docs.jquery.com/Plugins/Validation/Methods/remote
            remote: function( value, element, param ) {
                if ( this.optional(element) ) {
                    return "dependency-mismatch";
                }

                var previous = this.previousValue(element);
                if (!this.settings.messages[element.name] ) {
                    this.settings.messages[element.name] = {};
                }
                previous.originalMessage = this.settings.messages[element.name].remote;
                this.settings.messages[element.name].remote = previous.message;

                param = typeof param === "string" &amp;&amp; {url:param} || param;

                if ( previous.old === value ) {
                    return previous.valid;
                }

                previous.old = value;
                var validator = this;
                this.startRequest(element);
                var data = {};
                data[element.name] = value;
                $.ajax($.extend(true, {
                    url: param,
                    mode: "abort",
                    port: "validate" + element.name,
                    dataType: "json",
                    data: data,
                    success: function( response ) {
                        validator.settings.messages[element.name].remote = previous.originalMessage;
                        var valid = response === true || response === "true";
                        if ( valid ) {
                            var submitted = validator.formSubmitted;
                            validator.prepareElement(element);
                            validator.formSubmitted = submitted;
                            validator.successList.push(element);
                            delete validator.invalid[element.name];
                            validator.showErrors();
                        } else {
                            var errors = {};
                            var message = response || validator.defaultMessage( element, "remote" );
                            errors[element.name] = previous.message = $.isFunction(message) ? message(value) : message;
                            validator.invalid[element.name] = true;
                            validator.showErrors(errors);
                        }
                        previous.valid = valid;
                        validator.stopRequest(element, valid);
                    }
                }, param));
                return "pending";
            },

            /**
             * 正则验证
             * @param value
             * @param element
             * @param param
             */
            regex: function ( value, element, param ) {
                return param.test(value);
            },

            /**
             * 自定义函数验证
             * @param value
             * @param element
             * @param param
             */
            func: function ( value, element, param ) {
                if (typeof param == 'string' &amp;&amp; window[param]) {
                    param = window[param];
                }

                if (!$.isFunction(param)) {
                    console &amp;&amp; console.error('param is not a function');
                    return true;
                }

                var ret = param.call(element, value);
                if (ret === true) {
                    return true;
                } else {
                    var msg = $(element).data("msg-func");
                    var m = this.settings.messages[element.name] || 'Warning: No message defined for ' + element.name;
                    if (ret === false) {
                        msg = msg || (m.constructor === String ? m : m.func);
                    } else {
                        if (msg === undefined) {
                            $(element).data("msg-func", m.constructor === String ? m : m.func);
                        }
                        msg = ret;
                    }

                    if (m.constructor === String) {
                        this.settings.messages[element.name] = msg;
                    } else {
                        this.settings.messages[element.name] = $.extend({}, m, {func: msg});
                    }

                    return false;
                }
            }
        }

    });

// deprecated, use $.validator.format instead
    $.format = $.validator.format;

}(jQuery));

// ajax mode: abort
// usage: $.ajax({ mode: "abort"[, port: "uniqueport"]});
// if mode:"abort" is used, the previous request on that port (port can be undefined) is aborted via XMLHttpRequest.abort()
(function($) {
    var pendingRequests = {};
    // Use a prefilter if available (1.5+)
    if ( $.ajaxPrefilter ) {
        $.ajaxPrefilter(function( settings, _, xhr ) {
            var port = settings.port;
            if ( settings.mode === "abort" ) {
                if ( pendingRequests[port] ) {
                    pendingRequests[port].abort();
                }
                pendingRequests[port] = xhr;
            }
        });
    } else {
        // Proxy ajax
        var ajax = $.ajax;
        $.ajax = function( settings ) {
            var mode = ( "mode" in settings ? settings : $.ajaxSettings ).mode,
                port = ( "port" in settings ? settings : $.ajaxSettings ).port;
            if ( mode === "abort" ) {
                if ( pendingRequests[port] ) {
                    pendingRequests[port].abort();
                }
                pendingRequests[port] = ajax.apply(this, arguments);
                return pendingRequests[port];
            }
            return ajax.apply(this, arguments);
        };
    }
}(jQuery));

// provides delegate(type: String, delegate: Selector, handler: Callback) plugin for easier event delegation
// handler is only called when $(event.target).is(delegate), in the scope of the jquery-object for event.target
(function($) {
    $.extend($.fn, {
        validateDelegate: function( delegate, type, handler ) {
            return this.bind(type, function( event ) {
                var target = $(event.target);
                if ( target.is(delegate) ) {
                    return handler.apply(target, arguments);
                }
            });
        }
    });
}(jQuery));