【jQuery系列之插件】jquery插件之jquery-validation

equalTo方法：

 equalTo: function( value, element, param ) {

             // Bind to the blur event of the target in order to revalidate whenever the target field is updated
             var target = $( param );
             if ( this.settings.onfocusout && target.not( ".validate-equalTo-blur" ).length ) {
                 target.addClass( "validate-equalTo-blur" ).on( "blur.validate-equalTo", function() {
                     $( element ).valid();
                 } );
             }
             return value === target.val();
         },

url验证方法：

 url: function( value, element ) {

             // Copyright (c) 2010-2013 Diego Perini, MIT licensed
             // https://gist.github.com/dperini/729294
             // see also https://mathiasbynens.be/demo/url-regex
             // modified to allow protocol-relative URLs
             return this.optional( element ) || /^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})).?)(?::\d{2,5})?(?:[/?#]\S*)?$/i.test( value );
         },

日期date验证方法：

 // http://jqueryvalidation.org/date-method/
         date: function( value, element ) {
             return this.optional( element ) || !/Invalid|NaN/.test( new Date( value ).toString() );
         },

十进制数字含小数验证方法：

 // http://jqueryvalidation.org/number-method/
         number: function( value, element ) {
             return this.optional( element ) || /^(?:-?\d+|-?\d{1,3}(?:,\d{3})+)?(?:\.\d+)?$/.test( value );
         },

整数验证方法：

 // http://jqueryvalidation.org/digits-method/
         digits: function( value, element ) {
             return this.optional( element ) || /^\d+$/.test( value );
         },

最小长度验证方法：

 // http://jqueryvalidation.org/minlength-method/
         minlength: function( value, element, param ) {
             var length = $.isArray( value ) ? value.length : this.getLength( value, element );
             return this.optional( element ) || length >= param;
         },

最大长度验证方法：

 // http://jqueryvalidation.org/maxlength-method/
         maxlength: function( value, element, param ) {
             var length = $.isArray( value ) ? value.length : this.getLength( value, element );
             return this.optional( element ) || length <= param;
         },

长度范围验证方法：

 // http://jqueryvalidation.org/rangelength-method/
         rangelength: function( value, element, param ) {
             var length = $.isArray( value ) ? value.length : this.getLength( value, element );
             return this.optional( element ) || ( length >= param[ 0 ] && length <= param[ 1 ] );
         },

最小值，最大值，区间值验证方法：

 // http://jqueryvalidation.org/min-method/
         min: function( value, element, param ) {
             return this.optional( element ) || value >= param;
         },

         // http://jqueryvalidation.org/max-method/
         max: function( value, element, param ) {
             return this.optional( element ) || value <= param;
         },

         // http://jqueryvalidation.org/range-method/
         range: function( value, element, param ) {
             return this.optional( element ) || ( value >= param[ 0 ] && value <= param[ 1 ] );
         },

两个中文字符验证：自定义方法

 jQuery.validator.addMethod("byteRangeLength", function(value, element, param) {
     var length = value.length;
     for(var i = 0; i < value.length; i++){
         if(value.charCodeAt(i) > 127){
             length++;
         }
     }
   return this.optional(element) || ( length >= param[0] && length <= param[1] );
 }, $.validator.format("请确保输入的值在{0}-{1}个字节之间(一个中文字算2个字节)"));

邮政编码验证：自定义方法

 // 邮政编码验证
 jQuery.validator.addMethod("isZipCode", function(value, element) {
     var tel = /^[0-9]{6}$/;
     return this.optional(element) || (tel.test(value));
 }, "请正确填写您的邮政编码");

验证提示信息：

 messages: {
         required: "This field is required.",
         remote: "Please fix this field.",
         email: "Please enter a valid email address.",
         url: "Please enter a valid URL.",
         date: "Please enter a valid date.",
         dateISO: "Please enter a valid date ( ISO ).",
         number: "Please enter a valid number.",
         digits: "Please enter only digits.",
         equalTo: "Please enter the same value again.",
         maxlength: $.validator.format( "Please enter no more than {0} characters." ),
         minlength: $.validator.format( "Please enter at least {0} characters." ),
         rangelength: $.validator.format( "Please enter a value between {0} and {1} characters long." ),
         range: $.validator.format( "Please enter a value between {0} and {1}." ),
         max: $.validator.format( "Please enter a value less than or equal to {0}." ),
         min: $.validator.format( "Please enter a value greater than or equal to {0}." ),
         step: $.validator.format( "Please enter a multiple of {0}." )
     },