强大的jquery验证框架
jquery的验证太强大了，很容易就可以上手了，长度，必填，自定义检验，都可以很方便
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>validate.html</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <script type="text/javascript" src="scripts/jQuery/jquery-1.3.2.js"></script> <script type="text/javascript" src="scripts/jQuery/plugins/jquery.validate.js"></script> <script type="text/javascript" src="scripts/jQuery/plugins/jquery.validate.messages_cn.js"></script> </head><body><form action="" id="myForm"><input id="userName" name="userName" /><em>*</em><input id="age" name="age"/><em>*</em><input id="birthday" name="birthday"/><em>*</em><input id="tel" name="tel"/><em>*</em><input type="submit" value="提交" /></form><script type="text/javascript">$().ready(function() { initValidate();});jQuery.validator.addMethod("istel", function(value, element) { var decimal = /^-?\d+(\.\d{1,2})?$/; return this.optional(element) || (fucCheckTEL(value)); }, $.validator.format("不合法的电话号码!")); //电话号码function fucCheckTEL(TEL) { var i,j,strTemp; strTemp="0123456789-()# "; for (i=0;i<TEL.length;i++) { j=strTemp.indexOf(TEL.charAt(i)); if (j==-1) { //说明有字符不合法 return false; } } //说明合法 return true; } function initValidate() {$("#myForm").validate({rules : {'userName': {"required" : true,"minlength":10},'age' : {"required" : true},'birthday' : {"required" : true},'tel' : {"required" : true,"istel":true}}});}</script></body></html>$(document).ready(function(){ /* 设置默认属性 */ $.validator.setDefaults({ submitHandler: function(form) { form.submit(); } }); // 中文字两个字节 jQuery.validator.addMethod("byteRangeLength", function(value, element, param) { var length = value.length; for(var i = 0; i < value.length; i++){ if(value.charCodeAt(i) > 127){ length++; } } return this.optional(element) || ( length >= param[0] && length <= param[1] ); }, "请确保输入的值在3-15个字节之间(一个中文字算2个字节)"); /* 追加自定义验证方法 */ // 身份证号码验证 jQuery.validator.addMethod("isIdCardNo", function(value, element) { return this.optional(element) || isIdCardNo(value); }, "请正确输入您的身份证号码"); // 字符验证 jQuery.validator.addMethod("userName", function(value, element) { return this.optional(element) || /^[\u0391-\uFFE5\w]+$/.test(value); }, "用户名只能包括中文字、英文字母、数字和下划线"); // 手机号码验证 jQuery.validator.addMethod("isMobile", function(value, element) { var length = value.length; return this.optional(element) || (length == 11 && /^(((13[0-9]{1})|(15[0-9]{1}))+\d{8})$/.test(value)); }, "请正确填写您的手机号码"); // 电话号码验证 jQuery.validator.addMethod("isPhone", function(value, element) { var tel = /^(\d{3,4}-?)?\d{7,9}$/g; return this.optional(element) || (tel.test(value)); }, "请正确填写您的电话号码"); // 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"); $(regFrom).validate({ /* 设置验证规则 */ rules: { userName: { required: true, userName: true, byteRangeLength: [3,15] }, password: { required: true, minLength: 5 }, repassword: { required: true, minLength: 5, equalTo: "#password" }, question: { required: true }, answer: { required: true }, realName: { required: true }, cardNumber: { isIdCardNo: true }, mobilePhone: { isMobile: true }, phone: { isPhone: true }, email: { required: true, email: true }, zipCode: { isZipCode:true } }, /* 设置错误信息 */ messages: { userName: { required: "请填写用户名", byteRangeLength: "用户名必须在3-15个字符之间(一个中文字算2个字符)" }, password: { required: "请填写密码", minlength: jQuery.format("输入{0}.") }, repassword: { required: "请填写确认密码", equalTo: "两次密码输入不相同" }, question: { required: "请填写您的密码提示问题" }, answer: { required: "请填写您的密码提示答案" }, realName: { required: "请填写您的真实姓名" }, email: { required: "请输入一个Email地址", email: "请输入一个有效的Email地址" } }, /* 错误信息的显示位置 */ errorPlacement: function(error, element) { error.appendTo( element.parent() ); }, /* 验证通过时的处理 */ success: function(label) { // set as text for IE label.html(" ").addClass("checked"); }, /* 获得焦点时不验证 */ focusInvalid: false, onkeyup: false }); // 输入框获得焦点时，样式设置 $('input').focus(function(){ if($(this).is(":text") || $(this).is(":password")) $(this).addClass('focus'); if ($(this).hasClass('have_tooltip')) { $(this).parent().parent().removeClass('field_normal').addClass('field_focus'); } }); // 输入框失去焦点时，样式设置 $('input').blur(function() { $(this).removeClass('focus'); if ($(this).hasClass('have_tooltip')) { $(this).parent().parent().removeClass('field_focus').addClass('field_normal'); } }); }); jQuery.validator.addMethod("decimal", function(value, element) {var decimal = /^-?\d+(\.\d{1,2})?$/;return this.optional(element) || (decimal.test(value));}, $.validator.format("小数位数不能超过两位!"));//自定义验证方法 检查长度小于等于100jQuery.validator.addMethod("MaxLength100",function(value, element) {$(element).blur(function() {$(element).val($.trim($(element).val()));});var length = value.replace(/[^\x00-\xff]/g,"**").length;return this.optional(element)|| (length <= 100);}, "请输入一个长度最多是 100 的字符串");