JQuery验证框架
JS 验证框架的官方地址：
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http://docs.jquery.com/Plugins/Validation#API_Documentation
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在页面中加入JS和CSS样式
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??????? <link href="${ctx}/resources/js/validate/jquery.validate.css" type="text/css" rel="stylesheet" />
??????? <script src="${ctx}/resources/js/jquery.js" type="text/javascript"></script>
??????? <script src="${ctx}/resources/js/validate/jquery.validate.js" type="text/javascript"></script>
??????? <script src="${ctx}/resources/js/validate/jquery.validate.messages.js" type="text/javascript"></script>
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在page的onload方法里面加上：
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$("#signupForm").validate({rules: {firstname: "required",lastname: "required",username: {required: true,minlength: 2},password: {required: true,minlength: 5},confirm_password: {required: true,minlength: 5,equalTo: "#password"},email: {required: true,email: true},topic: {required: "#newsletter:checked",minlength: 2},agree: "required"},messages: {firstname: "Please enter your firstname",lastname: "Please enter your lastname",username: {required: "Please enter a username",minlength: "Your username must consist of at least 2 characters"},password: {required: "Please provide a password",minlength: "Your password must be at least 5 characters long"},confirm_password: {required: "Please provide a password",minlength: "Your password must be at least 5 characters long",equalTo: "Please enter the same password as above"},email: "Please enter a valid email address",agree: "Please accept our policy"}});?
现成的例子放在附件：
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