window getElementByID works in IE but not in FireFox --- Help!

D

Derek Erb

I am banging my head against the wall with this one. The following
code snippets work perfectly fine in MSIE6. But produce an error in
Firefox and do not work at all.

BROWSER.HTM
<HTML>
....
<div class="Abb">
<h2 id="ABTit">BROWSER</h2>
</div>
....
</HTML>

function MyFun() {
var aWin = window.open(strURL, 'BROWSERWIN',
"dependent=yes,menubar=no,resizable=yes,scrallbars=yes,toolbar=no,left=100,top=100,width=500,height=400");

aWin.document.getElementById('ABTit').innerHTML='MYTEXT';
}

My INDEX.HTM file calls the MyFun function which opens the BROWSER.HTM
file. The MyFun function is trying to modify the BROWSER.HTM window
contents and style.

In FireFox this produces the following error in the JavaScript Console
"aWin.document.getElementById("ABTit") has no properties".

I've seen that one before and normally it means I made a spelling error
somewhere... But this time it works fine in MSIE 6 and not in Firefox.

aWin.document.writeln("TESTING") works fine in both browsers.

I've tried various combinations and various web sites. I'm stumped...

Help!
 
F

Fred Oz

Derek said:
I am banging my head against the wall with this one. The following
code snippets work perfectly fine in MSIE6. But produce an error in
Firefox and do not work at all.

BROWSER.HTM
<HTML>
...
<div class="Abb">
<h2 id="ABTit">BROWSER</h2>
</div>
...
</HTML>

function MyFun() {
var aWin = window.open(strURL, 'BROWSERWIN',
"dependent=yes,menubar=no,resizable=yes,scrallbars=yes,toolbar=no,left=100,top=100,width=500,height=400");

aWin.document.getElementById('ABTit').innerHTML='MYTEXT';
}

My INDEX.HTM file calls the MyFun function which opens the BROWSER.HTM
file. The MyFun function is trying to modify the BROWSER.HTM window
contents and style.

In FireFox this produces the following error in the JavaScript Console
"aWin.document.getElementById("ABTit") has no properties".

I've seen that one before and normally it means I made a spelling error
somewhere... But this time it works fine in MSIE 6 and not in Firefox.

aWin.document.writeln("TESTING") works fine in both browsers.

I've tried various combinations and various web sites. I'm stumped...
Click to expand...

The most likely reason is that ABTit does not exist when
document.getElementById() tries to get it - the new window is still
creating the document.
 
R

RobB

Derek said:
I am banging my head against the wall with this one. The following
code snippets work perfectly fine in MSIE6. But produce an error in
Firefox and do not work at all.

BROWSER.HTM
<HTML>
...
<div class="Abb">
<h2 id="ABTit">BROWSER</h2>
</div>
...
</HTML>

function MyFun() {
var aWin = window.open(strURL, 'BROWSERWIN',
"dependent=yes,menubar=no,resizable=yes,scrallbars=yes,toolbar=no,left=100,top=100,width=500,height=400");

aWin.document.getElementById('ABTit').innerHTML='MYTEXT';
}

My INDEX.HTM file calls the MyFun function which opens the BROWSER.HTM
file. The MyFun function is trying to modify the BROWSER.HTM window
contents and style.

In FireFox this produces the following error in the JavaScript Console
"aWin.document.getElementById("ABTit") has no properties".

I've seen that one before and normally it means I made a spelling error
somewhere... But this time it works fine in MSIE 6 and not in Firefox.

aWin.document.writeln("TESTING") works fine in both browsers.

I've tried various combinations and various web sites. I'm stumped...

Help!
Click to expand...

All window.open() does is 1) open a new window, 2) set its location to
the specified url, and 3) return the new window object. The last -
which allows any subsequent code to run - is not necessarily
synchronous with the new document loading and being available for
scripting. One way to avoid this is to load the new document as a
javascript: url (favelet): as this is loaded into window.location, like
a file, it always works. Depends on how elaborate the document is, and
whether there needs to be any preprocessing of it back at the server.
Here's a sample:

Put something like this in the opener window:

function getDoc(myText)
{
return [

'<html><head><title>Yo!</title></head>' ,
'<body style="background:.........' ,
'<div class="Abb"><h2 id="ABTit">' ,
myText ,
'</h2></div>........etc..........'

].join('');
}

Then:

var aWin = null;
function MyFun(myText)
{
aWin = window.open(
'javascript:eek:pener.getDoc("' + myText + '")',
'BROWSERWIN',

'menubar=no,resizable=yes,scrollbars=yes,toolbar=no,left=100,top=100,width=500,height=400'
);
}

..........

MyFun('MYTEXT');
 
D

Derek Erb

Thank you for your reply.

I don't understand why the window would be open in MSIE but still be
creating the document in Firefox.

However, regardless, is there some way to make my code wait until the
window is created and the document is ready so that I am certain I can
modify it?

Thank you in advance for your assistance.
 
F

Fred Oz

Derek said:
Thank you for your reply.

I don't understand why the window would be open in MSIE but still be
creating the document in Firefox.
Click to expand...

Because once the script has created the window, it has finished its
job and moves on. The window then proceeds to load the document at
its own pace.

As for why one browser has finished creating the document and the
other hasn't - browser inconsistency is one of the fundamental
attractions of web programming.
However, regardless, is there some way to make my code wait until the
window is created and the document is ready so that I am certain I can
modify it?
Click to expand...

Read RobB's post below.
 
D

DU

Derek said:
I am banging my head against the wall with this one. The following
code snippets work perfectly fine in MSIE6. But produce an error in
Firefox and do not work at all.

BROWSER.HTM
<HTML>
...
<div class="Abb">
<h2 id="ABTit">BROWSER</h2>
</div>
...
</HTML>

function MyFun() {
var aWin = window.open(strURL, 'BROWSERWIN',
"dependent=yes,menubar=no,resizable=yes,scrallbars=yes,toolbar=no,left=100,top=100,width=500,height=400");
Click to expand...

var aWin:
Creating a local reference to the window object is not recommendable. As
soon as you're outside the scope of the function, that reference is
useless. The only way you can overcome the asynchronous problem of
window creating and document loaded and functional is to use a global
variable to store the window reference and then use it from the opener
to modify your node.

dependent=yes: will not work in MSIE 6
scrallbars=yes: will not render scrollbars if needed, if content
overflows window dimensions in all browsers
aWin.document.getElementById('ABTit').innerHTML='MYTEXT';
Click to expand...

Poor usage of innerHTML: you have no node to insert, just a text node.
It's much better to use DOM 2 CharacterData attribute or just setting
the nodeValue directly. It's not only using web standards, it's not only
supported by MSIE 5+, Mozilla-based browsers, Safari 1.x, Opera 7.x,
Konqueror 3.x,etc. but it is also more efficient than innerHTML and it
is not a W3C DOM attribute.

DU
 

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