jquery.validation.js 使用

引用文件：

  "~/assets/global/plugins/jquery-validation/js/jquery.validate.min.js",
    "~/assets/global/plugins/jquery-validation/js/jquery.metadata.js",
    "~/assets/global/plugins/jquery-validation/js/localization/messages_cn.js",

jquery.metadata.js

/*
 * Metadata - jQuery plugin for parsing metadata from elements
 *
 * Copyright (c) 2006 John Resig, Yehuda Katz, J�örn Zaefferer, Paul McLanahan
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 * Revision: $Id: jquery.metadata.js 4187 2007-12-16 17:15:27Z joern.zaefferer $
 *
 */

/**
 * Sets the type of metadata to use. Metadata is encoded in JSON, and each property
 * in the JSON will become a property of the element itself.
 *
 * There are three supported types of metadata storage:
 *
 *   attr:  Inside an attribute. The name parameter indicates *which* attribute.
 *          
 *   class: Inside the class attribute, wrapped in curly braces: { }
 *   
 *   elem:  Inside a child element (e.g. a script tag). The
 *          name parameter indicates *which* element.
 *          
 * The metadata for an element is loaded the first time the element is accessed via jQuery.
 *
 * As a result, you can define the metadata type, use $(expr) to load the metadata into the elements
 * matched by expr, then redefine the metadata type and run another $(expr) for other elements.
 * 
 * @name $.metadata.setType
 *
 * @example <p id="one" class="some_class {item_id: 1, item_label: 'Label'}">This is a p</p>
 * @before $.metadata.setType("class")
 * @after $("#one").metadata().item_id == 1; $("#one").metadata().item_label == "Label"
 * @desc Reads metadata from the class attribute
 * 
 * @example <p id="one" class="some_class" data="{item_id: 1, item_label: 'Label'}">This is a p</p>
 * @before $.metadata.setType("attr", "data")
 * @after $("#one").metadata().item_id == 1; $("#one").metadata().item_label == "Label"
 * @desc Reads metadata from a "data" attribute
 * 
 * @example <p id="one" class="some_class"><script>{item_id: 1, item_label: 'Label'}</script>This is a p</p>
 * @before $.metadata.setType("elem", "script")
 * @after $("#one").metadata().item_id == 1; $("#one").metadata().item_label == "Label"
 * @desc Reads metadata from a nested script element
 * 
 * @param String type The encoding type
 * @param String name The name of the attribute to be used to get metadata (optional)
 * @cat Plugins/Metadata
 * @descr Sets the type of encoding to be used when loading metadata for the first time
 * @type undefined
 * @see metadata()
 */

(function($) {

$.extend({
    metadata : {
        defaults : {
            type: 'class',
            name: 'metadata',
            cre: /({.*})/,
            single: 'metadata'
        },
        setType: function( type, name ){
            this.defaults.type = type;
            this.defaults.name = name;
        },
        get: function( elem, opts ){
            var settings = $.extend({},this.defaults,opts);
            // check for empty string in single property
            if ( !settings.single.length ) settings.single = 'metadata';
            
            var data = $.data(elem, settings.single);
            // returned cached data if it already exists
            if ( data ) return data;
            
            data = "{}";
            
            if ( settings.type == "class" ) {
                var m = settings.cre.exec( elem.className );
                if ( m )
                    data = m[1];
            } else if ( settings.type == "elem" ) {
                if( !elem.getElementsByTagName )
                    return undefined;
                var e = elem.getElementsByTagName(settings.name);
                if ( e.length )
                    data = $.trim(e[0].innerHTML);
            } else if ( elem.getAttribute != undefined ) {
                var attr = elem.getAttribute( settings.name );
                if ( attr )
                    data = attr;
            }
            
            if ( data.indexOf( '{' ) <0 )
            data = "{" + data + "}";
            
            data = eval("(" + data + ")");
            
            $.data( elem, settings.single, data );
            return data;
        }
    }
});

/**
 * Returns the metadata object for the first member of the jQuery object.
 *
 * @name metadata
 * @descr Returns element's metadata object
 * @param Object opts An object contianing settings to override the defaults
 * @type jQuery
 * @cat Plugins/Metadata
 */
$.fn.metadata = function( opts ){
    return $.metadata.get( this[0], opts );
};
$.validator.setDefaults({
    debug: true,
    errorPlacement: function (error, element) {
        var p = $("<p class='errmsg'>");
        p.append(error);
        p.appendTo(element.parent());
    }
})
})(jQuery);

messages_cn.js

(function (factory) {
    if (typeof define === "function" && define.amd) {
        define(["jquery", "../jquery.validate"], factory);
    } else {
        factory(jQuery);
    }
}(function ($) {

    $.extend($.validator.messages, {
        required: "必填",
        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")
    });

}));

有一些公用的写在了metadata.js里面

$.validator.setDefaults({
    debug: true,
    errorPlacement: function (error, element) {
        var p = $("<p class='errmsg'>");
        p.append(error);
        p.appendTo(element.parent());
    }
})

<style type="text/css">
        .errmsg {
            margin: -30px -40px 0 0px;
            float: right;
            color: #F30;
        }
    </style>

就是显示错误信息位置设定

使用：

1.建表单form，

2.把控件name赋值（只要各不相同即可),并在class里面赋值，比如required

3.在最后时判断是否验证通过再进行下一步操作

  if ($("#formFinance").valid()) {
                    if (!financeFlag) {
                        financeFlag = true;
                        o = self.selectFinanceItem();

上面的是早期的jquery.validate.js,我测的是1.5.5版本

最新的1.13版本的使用方法发生了变动，不需要jquery.metadata.js文件

<form id="registerForm" method="get" action="">
  <fieldset>
    <p>
      <label for="cusername">用户名</label>
      <input id="cusername" name="username" type="text" data-rule-required="true" data-rule-rangelength="[2,10]" data-msg-required="用户名不能为空" data-msg-rangelength="用户名长度必须是2到10个字符">
    </p>
    <p>
      <label for="cpassword">密码</label>
      <input id="cpassword" name="password" type="password" data-rule-required="true" data-rule-minlength="6" data-msg-required="密码不能为空" data-msg-minlength="至少设置6位密码">
    </p>
    <p>
      <label for="cconfirmpassword">确认密码</label>
      <input id="cconfirmpassword" name="confirmpassword" type="password" data-rule-equalTo="#cpassword" data-msg-equalTo="两次密码不一致">
    </p>
    <p>
      <label for="cemail">邮箱</label>
      <input id="cemail" name="email" data-rule-required="true" data-rule-email="true" data-msg-required="邮箱不能为空" data-msg-email="邮箱的格式不正确">
      </input>
    </p>
    <p>
      <label for="chasreferee">有推荐人请勾选</label>
      <input type="checkbox" id="chasreferee" name="hasreferee">
    </p>
    <p>
      <label for="creferee">推荐人</label>
      <input id="creferee" name="referee" data-rule-required="#chasreferee:checked" data-msg-required="推荐人不能为空">
      </input>
    </p>
    <p>
      <input type="submit" value="提交">
    </p>
  </fieldset>
</form>

直接data-属性使用

也可以自己手动设置具体信息：

  $("#formFinance").validate({
                    rules: {
                        fFinanceName: { required: true },
                        fLoanCount: { required: true ,min:0}
                    },
                    messages: {
                        fFinanceName: {
                            required: "必填",
                        },
                        fLoanCount: {
                            required: "必填",
                        },
                        fRate: {
                            required: "必填",
                        },
                        fFee: {
                            required: "必填",
                        },
                        fPeriod: {
                            required: "必选",
                        } 
                    },
                    errorPlacement: function (error, element) {
                        var p = $("<p class='errmsg'>");
                        p.append(error);
                        p.appendTo(element.parent());
                    }
                });

http://blog.csdn.net/hliq5399/article/details/6557789

http://www.cnblogs.com/linjiqin/p/3431835.html

http://www.runoob.com/jquery/jquery-plugin-validate.html

http://www.cnblogs.com/yanjunwu/p/3764740.html

 https://github.com/ffmike/jquery-validate