js 防止表单重复提交

最新推荐文章于 2024-09-01 07:00:00 发布

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原文链接：http://www.cnblogs.com/siashan/p/3916640.html

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
   var iscommit = false;
   function dosubmit(){
       if(!iscommit){
           iscommit = true;
           return true;
       }else{
           return false;
       }
   }
</script>
</head>
<body>
   <form action="/day07/DoFormServlet" method="post" onsubmit="return dosubmit()">
       用户名：<input type="text" name="user"><br>
       <input type="submit" value="登录">
   </form>
</body>
</html>