<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title></title><link href="css/style.css" rel="stylesheet" type="text/css" /><!-- 引入jQuery --><script src="../../scripts/jquery.js" type="text/javascript"></script><script type="text/javascript">//<![CDATA[$(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"); });//end 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></head><body><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>img素材：
css代码
body { font:12px/19px Arial, Helvetica, sans-serif; color:#666;}form div { margin:5px 0;}.int label { float:left; width:100px; text-align:right;}.int input { padding:1px 1px; border:1px solid #ccc;height:16px;}.sub { padding-left:100px;}.sub input { margin-right:10px; }.formtips{width: 200px;margin:2px;padding:2px;}.onError{ background:#FFE0E9 url(../img/reg3.gif) no-repeat 0 center; padding-left:25px;}.onSuccess{ background:#E9FBEB url(../img/reg4.gif) no-repeat 0 center; padding-left:25px;}.high{ color:red;}
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