Error handling
 

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:

function errorhandler(errormessage,url,line)

{

alert("Error :"+errormessage);

alert("url :" +url);

alert("line :"+line);

return true;

}

onerror=errorhandler;

Could someone help me!!!

Re: Error handling
 

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.