jquery validation addMethod 自定义方法

 // 手机号码验证
 jQuery.validator.addMethod("mobile", function(value, element) {
     var length = value.length;
     var mobile =  /^(((13[0-9]{1})|(15[0-9]{1}))+\d{8})$/
     return this.optional(element) || (length == 11 && mobile.test(value));
 }, "手机号码格式错误");

 // 电话号码验证
 jQuery.validator.addMethod("phone", function(value, element) {
     var tel = /^(0[0-9]{2,3}\-)?([2-9][0-9]{6,7})+(\-[0-9]{1,4})?$/;
     return this.optional(element) || (tel.test(value));
 }, "电话号码格式错误");

 // 邮政编码验证
 jQuery.validator.addMethod("zipCode", function(value, element) {
     var tel = /^[0-9]{6}$/;
     return this.optional(element) || (tel.test(value));
 }, "邮政编码格式错误");

 // QQ号码验证
 jQuery.validator.addMethod("qq", function(value, element) {
     var tel = /^[1-9]\d{4,9}$/;
     return this.optional(element) || (tel.test(value));
 }, "qq号码格式错误");

 // IP地址验证
 jQuery.validator.addMethod("ip", function(value, element) {
     var ip = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;
     return this.optional(element) || (ip.test(value) && (RegExp.$1 < 256 && RegExp.$2 < 256 && RegExp.$3 < 256 && RegExp.$4 < 256));
 }, "Ip地址格式错误");

 // 字母和数字的验证
 jQuery.validator.addMethod("chrnum", function(value, element) {
     var chrnum = /^([a-zA-Z0-9]+)$/;
     return this.optional(element) || (chrnum.test(value));
 }, "只能输入数字和字母(字符A-Z, a-z, 0-9)");

 // 中文的验证
 jQuery.validator.addMethod("chinese", function(value, element) {
     var chinese = /^[\u4e00-\u9fa5]+$/;
     return this.optional(element) || (chinese.test(value));
 }, "只能输入中文");

 // 下拉框验证
 $.validator.addMethod("selectNone", function(value, element) {
     return value == "请选择";
 }, "必须选择一项");

 // 字节长度验证
 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)"));

 使用：

 byteRangeLength[3,4]

 //整数位，小数位验证
 jQuery.validator.addMethod("decimal", function(value, element, param) {return this.optional(element) || new RegExp("^-?\\d{1," + (param.integer != null ? param.integer : "") + "}" + (param.fraction != null ? (param.fraction > 0 ? "(\\.\\d{1," + param.fraction + "})?$" : "$") : "(\\.\\d+)?$")).test(value);}, "numeric value out of bounds");

 使用：decimal: {
          integer: 12, //整数最大位数
          fraction: 3  //小数点后最多位数
         }

 //整数位，小数位验证

 jQuery.validator.addMethod("decimal2", function(value, element, param) {
     return this.optional(element) || new RegExp("^-?\\d{1," + (param[0] != null ? param[0] : "") + "}" + (param[1] != null ? (param[1] > 0 ? "(\\.\\d{1," + param[1] + "})?$" : "$") : "(\\.\\d+)?$")).test(value);
 }, $.validator.format("内容输入错误或者格式错误：整数位最多{0}位，小数位最多{1}位"));
 decimal2[3,4]