7.打印页面出错原因

 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>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 <script language="javascript">
 9 <!-- 
10     主要利用try catch来打印错误的信息
11 -->
12 function getError()
13 {
14     try
15     {
16      x =new test;                        //产生错误。
17     }
18     catch(e)
19     {
20        document.write(e.description+"aaaaaa")     //打印错误结果.
21     }
22 }
23 </script>
24 </head>
25 <body onload="getError()" > 
26 </body>
27 </html>

posted on 2017-02-26 21:49 Sharpest 阅读(149) 评论(0) 收藏举报