There are different ways for disable back button
1.
<script>history.go(1)</script>
2.
<script type="text/javascript">
function DisableBack()
{
window.history.forward();
}
DisableBack();
window.onload = DisableBack;
window.onpageshow = function(evt)
{
if (evt.persisted) DisableBack();
}
window.onunload = function()
{
void (-10000);
}
</script>
3.
<script type = "text/javascript" >
function preventBack(){window.history.forward();}
setTimeout("preventBack()", 0);
window.onunload=function(){null};
</script>
1.
<script>history.go(1)</script>
2.
<script type="text/javascript">
function DisableBack()
{
window.history.forward();
}
DisableBack();
window.onload = DisableBack;
window.onpageshow = function(evt)
{
if (evt.persisted) DisableBack();
}
window.onunload = function()
{
void (-10000);
}
</script>
3.
<script type = "text/javascript" >
function preventBack(){window.history.forward();}
setTimeout("preventBack()", 0);
window.onunload=function(){null};
</script>