37.防止按钮连击 document.readyState = ‘complete’获取页面状态

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html xmlns="http://www.w3.org/1999/xhtml" >
 5 <head>
 6 <title>标题页</title>
 7 <script LANGUAGE="JavaScript">
 8 function doubleCheck(){ 
 9     if (document.readyState != null &&  document.readyState != 'complete') //判断页面是否执行完毕
10     { 
11         alert("正在处理，请等待！"); //没有执行完毕提示，并返回false
12         return false; 
13     } 
14     else 
15     { 
16         alert("正在处理"); 
17         return true;  //执行完毕
18     } 
19 } 
20 </script>
21 </head>
22 <body>
23 <input type=text name="txt1" value="this is test!">
24 <input type=button value="提交" onClick="doubleCheck()">
25 </body>
26 </html>

posted on 2017-02-27 23:54 Sharpest 阅读(146) 评论(0) 编辑收藏举报