onkeyup and backspace key

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06-12-2005, 01:56 AM

huseyin_akturk huseyin_akturk is offline

SEO Junior

Join Date: Jun 2005

Posts: 1

huseyin_akturk is on a distinguished road

onkeyup and backspace key

Hi,
Firstly, I want to say I am new on javascript.
I want to remove backspace key. I mean that when user presses backspace key, I will prevent user to go back page. But user can press any part of the page, not speficific part. I thought that I can do this operation in body tag. And I wrote this code;

Code:

<body onkeyup="blockbackspace(this)">

And there is a javascript function;

Code:

function blockbackspace(n){
      if (event.keyCode == 8){
         ???? 
      }
}

As you see above, when user press backpace "if (event.keyCode == 8)" is true. But what should I do rest of this? Altough I wrote this javascript the back page is loaded. How can I prevent?

06-14-2005, 09:25 PM

SEO Aaron

SEO Guy Web dev team

Join Date: Feb 2005

Posts: 693 SEO Aaron is on a distinguished road

This seems to work.

<html>
<head>
<title>Remove Backspace</title>
<script type="text/javascript">
var allow_backspace = false;
var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;

function trapKeyPress(event)
{
if (!allow_backspace && keyCode == 8)
return false;
return true;

}
</script></head>
<body onkeydown="return trapKeyPress(event);" onkeypress="return trapKeyPress(event);">

</BODY>
</HTML>

I found it here....modified it a bit.

http://groups-beta.google.com/group...33b6bdc06b664f9

Last edited by SEO Aaron : 06-14-2005 at 10:20 PM.

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