Error handling

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Views: 290 | Replies: 1

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Join Date: Mar 2008

Location: India

Posts: 5

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Newbie Poster

Error handling

Mar 21st, 2008

I am new to javascript and have made a simple form accepting details of login on a web page. I fail to understand how the following code handles the error when written between script tags:

Help with Code Tags

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function errorhandler(errormessage,url,line)
{
alert("Error :"+errormessage);
alert("url :" +url);
alert("line :"+line);
return true;
}
onerror=errorhandler;

Could someone help me!!!

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Join Date: Sep 2007

Posts: 61

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Junior Poster in Training

Re: Error handling

Mar 21st, 2008

There are two ways to handle error

onerror - which just allows you to carry on gracefully when there is an error but takes little corrective action
The try..catch code block that allows you to trap the error and deal with its consequences

I discuss this, and many other JS issues, in my quickreference guide

JavaScript Quick Reference

Hope this helps.

http://www.explainth.at