jQuery表单验证插件Validator的使用方法

   from表单数据的合法性验证是个很常见的需求,jQuery提供了一个插件:jquery validate 官网下载。
   若想使用需先引用jquery.validate.js,并且要在jquery.js之后引用。

<script src="js/jquery.js">script>
<script src="js/jquery.validate.js">script>

   把现在写的项目拿来演示一下,其使用了bootstrap框架。
   

class="form-horizontal" id="fillForm" action="javascript:void(0);"> <div class="form-group"> <div class="col-md-8"> <div class="input-group"> class="input-group-addon"> class="glyphicon glyphicon-user"> "text" id="new_userName" name="new_userName" class="form-control" placeholder="输入新昵称(昵称确认后不可更改,4-10个字符)"> div> div> div> <div class="form-group"> <div class="col-md-8"> <div class="input-group"> class="input-group-addon"> class="glyphicon glyphicon-lock"> "password" id="new_userPwd" name="new_userPwd" class="form-control" placeholder="输入密码(5-15个字符)"/> div> div> div> <div class="form-group"> <div class="col-md-8"> <div class="input-group"> class="input-group-addon"> class="glyphicon glyphicon-lock"> "password" id="new_userPwd_twice" name="new_userPwd_twice" class="form-control" placeholder="请再次输入密码"/> div> div> div> <div class="form-group"> <div class="col-md-8"> <div class="input-group"> class="input-group-addon"> class="glyphicon glyphicon-envelope"> id="new_userEmail" name="new_userEmail" type="email" class="form-control" placeholder="输入个人邮箱"/> div> div> div> <div class="form-group"> <div class="col-md-8"> <div class="input-group"> class="input-group-addon"> class="glyphicon glyphicon-phone"> "text" id="new_userPhone" name="new_userPhone" class="form-control" placeholder="输入个人手机号"/> div> div> div> <div class="form-group"> <div class="col-md-8"> <div class="input-group"> class="input-group-addon"> class="glyphicon glyphicon-calendar"> id="new_userBirth" name="new_userBirth" class="form-control" placeholder="选择您的生日(1960~2012)" readonly /> div> div> div> <div class="form-group"> <div class="radio col-md-8"> div> div> <div class="form-group"> <div class="col-md-8"> <div id="col_and_maj" class="input-group"> <div class="col-md-4"> div> <div class="col-md-4"> div> div> div> div> <div class="form-group form-button"> div>

   html文件跟平常一样,主要在js中进行验证:
   

$(function(){
jQuery.validator.addMethod("regUserName", function (value, element) {

        return this.optional(element) || /^[0-9]*[a-zA-Z_\u4e00-\u9fa5]+[0-9]*$/.test(value);

    }, "注册昵称为4-10位数字、下划线、中文或英文字母,但不能全是数字");

    jQuery.validator.addMethod("isMobile", function(value, element) {

        var length = value.length;

        var mobile = /^((\(\d{2,3}\))|(\d{3}\-))?1[3,8,5]{1}\d{9}$/;

        return this.optional(element) || (length == 11 && mobile.test(value));

    }, "请正确填写您的手机号码");

    //登录帐号合法性验证
    jQuery.validator.addMethod("logAccountCheck", function (value, element) {

        var length = value.length;

        var mobile = /^((\(\d{2,3}\))|(\d{3}\-))?1[3,8,5]{1}\d{9}$/;

        return this.optional(element) || (length == 11 && mobile.test(value)) || /^[\u0391-\uFFE5\w]+$/.test(value);

    }, "昵称不符合登录规则");

$("#fillForm").validate({
        errorElement: 'span',
        errorClass: 'help-block',
        focusInvalid: false,
        rules: {
            new_userName: {
                required: true,
                regUserName: true,
                minlength: 4,
                maxlength: 10
            },
            new_userPwd: {
                required: true,
                rangelength: [5, 15]
            },
            new_userPwd_twice: {
                required: true,
                equalTo: "#new_userPwd"
            },
            new_userEmail: {
                required: true,
                email: true
            },
            new_userPhone: {
                required: true,
                isMobile:true,
                digits: true,
                minlength: 11,
                maxlength: 11
            },
            new_userBirth: {
                required: true
            },
            new_userCollege: {
                required: true
            },
            new_userMajor: {
                required: true
            }
        },
        messages: {
            new_userName: {
                required: '昵称不能为空',
                minlength: '昵称最少为4位',
                maxlength: '昵称最多为10位'
            },
            new_userPwd: {
                required: '密码不能为空',
                rangelength: $.validator.format("密码长度必须在 {0} 到 {1} 之间")
            },
            new_userPwd_twice: {
                required: '此项不能为空',
                equalTo: '两次输入的密码必须一致'
            },
            new_userEmail: {
                required: '邮箱不能为空',
                email: '邮箱格式不正确(例如: [email protected])'
            },
            new_userPhone: {
                required: '电话号不能为空',
                digits: '电话号必须是数字',
                minlength: '电话号为11位',
                maxlength: '电话号为11位'
            },
            new_userBirth: {
                required: '生日不能为空'
            },
            new_userCollege: {
                required: '学院不能为空'
            },
            new_userMajor: {
                required: '专业不能为空'
            }
        },
        highlight: function (element) {
            $(element).closest('.form-group').addClass('has-error');
        },
        success: function (label) {
            label.closest('.form-group').removeClass('has-error').addClass('has-success');
            label.remove();
        },
        errorPlacement: function (error, element) {
            element.parent('div').after(error);
        },

        submitHandler: function (form) {
            var result = {
                "new_userName": $("#new_userName").val(),
                "new_userPwd": $("#new_userPwd").val(),
                "new_userEmail": $("#new_userEmail").val(),
                "new_userPhone": $("#new_userPhone").val(),
                "new_userBirth": $("#new_userBirth").val(),
                "new_userGender": $("input[name='new_userGender']:checked").val(),
                "new_userCollege": $("#new_userCollege").val() + ',' + $("#new_userMajor").val()
            };
            result.new_userIP = ip;
            var res = JSON.stringify(result);
            alert(res);

            return false;
        }
    })

})

   简单用法:
   1.:rules里定义输入框规则,常见的有required, minlength, maxlength, email, 其中使用输入框的name属性来指定输入框。
   2:messages里定义当输入内容不符合规则时显示的信息,如果自定义则显示默认的错误信息。
   3:可以自定义规则,比如上面代码开头部分定义了自定义规则,可以根据自己的需求仿照代码即可,而且网上也提供了现成的自定义验证规则。
   4:当输入框均符合规则时,可以点击提交,此时,会指定submitHandler函数,

   
   更详细的使用教程可参考官网

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