tryjs_try_catch2 在线代码实例

实例代码( Tip: 登录后体验更佳 )

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<!DOCTYPE html>
<html>
<head> 
<meta charset="utf-8"> 
<title>W3Cschool教程(w3cschool.cn)</title> 
<script>
var txt="";
function message(){
    try{
        adddlert("Welcome guest!");
    }
    catch(err){
        txt="本页有一个错误。\n\n";
        txt+="单击确定继续跳转\n";  
        txt+="或者单击取消返回\n\n";
        if(confirm(txt)){
            document.location.href="http://www.w3cschool.cn/";
        }
    }
}
</script>
</head>
<body>
<input type="button" value="查看消息" onclick="message()" />
</body>
</html>
 
 
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运行结果
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