<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <style type="text/css"> body{ color:#666; font:12px/1.5 arial;} form div{ margin:5px 0;} .int label{ float:left; width:100px; text-align:right;} .int input{ height:16px; padding:1px 1px; border:1px solid #ccc;} .sub{ padding-left:100px;} .sub input{ margin-right:10px; } .formtips{ width:200px; margin:2px; padding:2px;} .onError{ padding-left:25px; background:#ffe0e9 url(reg3.gif) no-repeat 0;} .onSuccess{ padding-left:25px; background:#e9fbeb url(reg4.gif) no-repeat 0;} .high{ color:#f00;} </style> <script src="jquery-1.5.2.js" type="text/javascript"></script> <script type="text/javascript"> $(function(){ //如果是必填的，则加红星标识. $("form :input.required").each(function () { var $required = $("<strong class='high'> *</strong>"); //创建元素 $(this).parent().append($required); //然后将它追加到文档中 }); //文本框失去焦点后 $('form :input').blur(function () { var $parent = $(this).parent(); $parent.find(".formtips").remove(); //验证用户名 if ($(this).is('#username')) { if (this.value=="" || this.value.length < 6) { var errorMsg = '请输入至少6位的用户名.'; $parent.append('<span class="formtips onError">' + errorMsg + '</span>'); } else { var okMsg = '输入正确.'; $parent.append('<span class="formtips onSuccess">'+okMsg+'</span>'); } } //验证邮件 if ($(this).is('#email')) { if (this.value == "" || (this.value != "" && !/.+@.+\.[a-zA-Z]{2,4}$/.test(this.value))) { var errorMsg = '请输入正确的E-Mail地址.'; $parent.append('<span class="formtips onError">'+errorMsg+'</span>'); } else { var okMsg = '输入正确.'; $parent.append('<span class="formtips onSuccess">' + okMsg + '</span>'); } } }).keyup(function () { $(this).triggerHandler("blur"); }).focus(function () { $(this).triggerHandler("blur"); }); //提交，最终验证。 $('#send').click(function () { $("form :input.required").trigger('blur'); var numError = $('form .onError').length; if (numError) { return false; } alert("注册成功,密码已发到你的邮箱,请查收."); }); //重置 $('#res').click(function () { $(".formtips").remove(); }); }) </script> <form method="post" action=""> <div class="int"> <label for="username">用户名:</label> <input type="text" id="username" class="required" /> </div> <div class="int"> <label for="email">邮箱:</label> <input type="text" id="email" class="required" /> </div> <div class="int"> <label for="personinfo">个人资料:</label> <input type="text" id="personinfo" /> </div> <div class="sub"> <input type="submit" value="提交" id="send" /> <input type="reset" id="res" /> </div> </form> </body> </html>