How To disable BACK BUTTON?

[romeo971987]

disable back button..... page should no do postback...
i used history.go, history.back, session.abandon ...and many more...but still previous page shows.... help me to expire the previous page.......

[acoder]

This has been asked a number of times. See, for example, this and this.

[sravan2000]

this is the code to disable back button
just try this

<script language="javas cript">
javascript:wind ow.history.forw ard(1);
</script>

[acoder]

<script language="javas cript">
javascript:wind ow.history.forw ard(1);
</script>

There are a number of problems with this.

Firstly, language is deprecated - use type="text/javascript" instead.

Secondly, there's no need for the javascript: protocol here.

Thirdly, and most importantly, there's no reliable way to disable the back button. One way is to use location.replac e, but it can't be 100% reliable. If this is needed for a web application, just warn the user instead.