Posted in Javascript onJuly 30, 2009
Java代码
<html> <head> <title>javascript</title> <script type="text/javascript"> function test(inVal){ try{ inVal=inVal.toUpperCase(); }catch(error){ alert("An exception has occurred.Error was:\n\n"+error.message); } } </script> </head> <body> <input type="button" value="Test" onclick="test(null);"> </body> </html>
<html> <head> <title>javascript</title> <script type="text/javascript"> function test(inVal){ try{ inVal=inVal.toUpperCase(); }catch(error){ alert("An exception has occurred.Error was:\n\n"+error.message); } } </script> </head> <body> <input type="button" value="Test" onclick="test(null);"> </body> </html>
利用firefox的firebug来调bug
引用
<html> <head> <title>javascript</title> <script type="text/javascript"> function test(){ var a=0; console.log("checkpoint 1"); a=a+1; console.log("checkpoint 2"); a=a-1; console.log("checkpoint 3"); a=a.toLowerCase(); console.log("checkpoint 4"); } </script> </head> <body> <input type="button" value="Test" onclick="test(null);"> </body> </html>
在IE中可以添加一个方法
引用
function Console(){ this.log=function(inText){ alert(inText); } } var console=new Console();
Javascript 学习笔记 错误处理
声明:登载此文出于传递更多信息之目的,并不意味着赞同其观点或证实其描述。
Reply on: @reply_date@
@reply_contents@