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Forcing a refresh on back button
- Thread starter awingnut
- Start date
greedyzebra
Technical User
From some of the posts I've read here, I don't think there's anyway to capture the event of clicking the back button.
If your page is in a javaScript-spawned window without the standard tool bar, you could provide your own "back" button that would enable you to insure that the previous page is being refreshed, since you could be able to act on the clicking of that button. But even that is not foolproof since you can right-click and then select "back."
You might give us some information about the page you want refreshed, and why. Perhaps there's some suggestions we could make that might give you the results you're looking for. I'm guessing it's a form...
Good luck.
If your page is in a javaScript-spawned window without the standard tool bar, you could provide your own "back" button that would enable you to insure that the previous page is being refreshed, since you could be able to act on the clicking of that button. But even that is not foolproof since you can right-click and then select "back."
You might give us some information about the page you want refreshed, and why. Perhaps there's some suggestions we could make that might give you the results you're looking for. I'm guessing it's a form...
Good luck.
theocraticmind
Programmer
ASP? if the page in question is using post info (from a form, say) the browser (IE for sure) wont let the user see it with out refreshing.
you can set the no-cache value to the pages
<META HTTP-EQUIV="expires" CONTENT="0">
<meta http-equiv="Cache-Control" content="no-cache">
_________________________________________________________
$str = "sleep is good for you. sleep gives you the energy you need to function";
$Nstr = ereg_replace("sleep","coffee",$str); echo $Nstr;
[/sub]
<META HTTP-EQUIV="expires" CONTENT="0">
<meta http-equiv="Cache-Control" content="no-cache">
_________________________________________________________
$str = "sleep is good for you. sleep gives you the energy you need to function";
$Nstr = ereg_replace("sleep","coffee",$str); echo $Nstr;
- Thread starter
- #5
Thanks to all that replied.
onpnt:
That didn't seem to do anything.
greedyzebra & theocraticmind:
Perhaps this is a PHP question then. I have a PHP script that generates a form which presents the user with some file names. The user makes action selections on those file names then submits the form (POST). The second execution does things with the files that makes the first pass obsolete. Indeed, if the user hits the back button then submits again, undesirable results can occur. I want the first pass form to either automatically refresh or become expired and not displayed. I can my own back button on the second pass but that does not prevent the user from hitting the browser back form.
onpnt:
That didn't seem to do anything.
greedyzebra & theocraticmind:
Perhaps this is a PHP question then. I have a PHP script that generates a form which presents the user with some file names. The user makes action selections on those file names then submits the form (POST). The second execution does things with the files that makes the first pass obsolete. Indeed, if the user hits the back button then submits again, undesirable results can occur. I want the first pass form to either automatically refresh or become expired and not displayed. I can my own back button on the second pass but that does not prevent the user from hitting the browser back form.
theocraticmind
Programmer
I know with ASP and IE pages "expire". that is, the user must refresh the page (and resubmit and post info) if the page was using post info. My guess is that this would be the same for PHP and any (most) borwser(s). So, maybe you could use some post info in teh first page... just a dummy value to force reload. I don't use PHP though, so I don't know how you could do it.
humbleprogrammer
Programmer
Hi,
Try adding the following PHP code to the top of the page.
if($HTTP_REFFERER!=$PHP_SELF){
header("Location: $PHP_SELF"
;
}
or add <META HTTP-EQUIV="Pragma" CONTENT="no-cache"> in your header tags.
Try adding the following PHP code to the top of the page.
if($HTTP_REFFERER!=$PHP_SELF){
header("Location: $PHP_SELF"
;}
or add <META HTTP-EQUIV="Pragma" CONTENT="no-cache"> in your header tags.
- Thread starter
- #8
Just to close this out, Someone on the javascript forum suggested a cool solution that effectively disables the back button.
The first time the page displays the '+1' does nothing because there is no forward page yet. When the submit button of the form is clicked and the page redisplayed (creating a forward page with respect to the previous one), clicking on the back button causes the first page to immediately redisplay the second. In effect the back button does nothing.
Code:
.
.
.
<head>
<script language="javascript">
window.history.go(+1);
</script>
.
.
.
</head>
.
.
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