Solved

backbutton asp reload

Posted on 1998-09-05
4
166 Views
Last Modified: 2013-12-25
If I use the back button the page doesn't run the asp instead it used the cache. It works good with ie4sp1. Anyone who have solved this one?

---
3 asp pages
<%
response.expires=0  'makes it works with ie4sp1
Session("kalle")=1
response.write Session("kalle")
%>
<p><a href="two.asp">cont</a></p>
---
<%
response.expires=0  
Session("kalle")=Session("kalle")+1
response.write Session("kalle")
%>
<p><a href="tre.asp">cont</a></p>
---
<%
response.expires=0  
Session("kalle")=Session("kalle")+1
response.write Session("kalle")
%>
0
Comment
Question by:manne
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4 Comments
 
LVL 28

Expert Comment

by:sybe
ID: 1854776
I would look for a solution by combining ASP and Javascript. I can work out code if you want, but here is just the idea:

- While loading, ASP writes the time to a JS-variable.
- Another JS-variable is set to the current date/time
- Both are compared, and when the difference is bigger then say 10 seconds, the page is forced to reload by Javascript.

The trick is that when the backbutton is used, and the page comes from the cache, so the ASP-set JS variable is old.
However, the JS-variable which is set to current date/time refreshes even when the backbutton is used.

code would be something like this:

<script language="Javascript">
<%
tmLoaded = Now()
Response.write "tmLoaded = new Date(...date/time based on tmLoaded);" & CHR(10)
%>
tmDisplayed = new Date();

if (tmLoaded-tmDisplayed > 10) {document.reload();}
</script>
0
 

Author Comment

by:manne
ID: 1854777
doesn't the backbutton have a event where you can place location.reload()
0
 
LVL 28

Accepted Solution

by:
sybe earned 100 total points
ID: 1854778
Ok, I found some time to make a working code:

<script language="Javascript">
<%
tmLoaded = Now()
Response.write "tmLoaded = new Date(" & Year(tmLoaded) & "," & (Month(tmLoaded)-1) & "," & Day(tmLoaded)& "," & Hour(tmLoaded)& "," & Minute(tmLoaded) & "," & Second(tmLoaded) & ");" & CHR(10)
%>
tmDisplayed = new Date();
if (tmDisplayed-tmLoaded > 5000) {document.location.reload();}
</script>

0
 
LVL 28

Expert Comment

by:sybe
ID: 1854779
Manne,

I don't know if you realize it, but I am really proud of the code I showed you. Mainly because it works, and I did not think it would be possible to make a thing like that work.

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