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Using history functionality in both NS and IE

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ckennerdale

ckennerdale

Programmer
Dec 23, 2000
158
GB
I am trying to set up histiry buttons, providing back and forward functionality, controlling another frame.

I can get it to work in both IE and NS, but when I try to combine code for both browsers into a function call LoadVars() - see below, it doesnt work, However I have used this technique before with success- although not with history.

Any ideas?

The code below is the frame containing the buttons-

<html>
<head>
<title>Untitled Document</title>
<script>
function LoadVars(){
if (navigator.appName == &quot;Netscape&quot;){
window = parent.frames[0];
}
else{
window;
}
}
function goBack()
{
window.history.back();
}

function goForward()
{
window.history.forward();
}

</script>

</head>
<body bgcolor=&quot;#FFFFFF&quot; onLoad=&quot;LoadVars()&quot;>
<br>
<br>

<br>
<a href=javascript:goBack();>back</a>-
<a href=javascript:goForward();>forward</a>-
</body>
</html> Caspar Kennerdale
Senior Media Developer
 
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I'm not sure if I explaned my self correctly

The top.history.back works fine in IE but in Navigator it doesnt work in frames- The whole page gets replaced!

Basically I need bottom frame to control the back and forward of top frame.

window.history.back() works fine in IE but not Navigator
whereas parent.frames[0].history.back() works in Navigator.

So I thought I use this code which has worked when this type of incompatability has been met before-

<script>
function LoadVars(){
if (navigator.appName == &quot;Netscape&quot;){
window = parent.frames[0];
}
else{
window;
}
}
function goBack()
{
window.history.back();
}

function goForward()
{
window.history.forward();
}

</script>

And then have LoadVars on Body load.

But it just isnt working?

Essentially if the broser is NS then it should replace 'window' with 'parent.frames[0]' and thus make the functons compliant in both browsers!

???? Caspar Kennerdale
Senior Media Developer
 
Upvote 0 Downvote
Why not use parent.frames[0] for both browsers? IE has the frames array too.

Or you could name your frame when you define it.
<frame name=&quot;top_frame&quot; src=&quot;...&quot;>
parent.top_frame.forward();
parent.top_frame.back();
Sincerely,

Tom Anderson
CEO, Order amid Chaos, Inc.
 
Upvote 0 Downvote
parent.frames[0] doesnt seem to work with IE (I'm using 5)

I just get 'Done but with errors' at the bottom of the browser and nothing happens. This is the same if I use parent.&quot;framename&quot;.

parent.frames[0] works with NS
window. works with IE.

So I was hoping to have some kind of function that detected if you were on NS and if so to interpret 'window' as 'parent.frames[0]' and thus the button functions would work.

I have used this technique before, for other things, but it isnt working here. Caspar Kennerdale
Senior Media Developer
 
Upvote 0 Downvote
I've never had any problems like that.

Anyway, I don't think you can rename the window object since that is already declared inherently. Name it something else.

function LoadVars(){
if (navigator.appName == &quot;Netscape&quot;){
var top_frame = parent.frames[0];
}
else{
var tope_frame = window;
}
}

top_frame.history.back();
top_frame.history.forward();
Sincerely,

Tom Anderson
CEO, Order amid Chaos, Inc.
 
Upvote 0 Downvote
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