Solved

storing dom path in a variable

Posted on 2006-11-20
5
190 Views
Last Modified: 2013-11-19
Hello all;

I currently have a very complex and multi-layered system in development.  It is necessarry from time to time to time to change a property of an object embedded in an iframe from another locaton.  The result is that i have big calling strings that look like this:

top.window.frames.content.window.frames.dockLayer.setDockOpacity();

What I want to be able to do is create a javascript variable that contains an object reference so that in script I can say something like this:

dockNoSession.setDockOpacirty ();

So, I really want to be able to reference the dom path "top.window.frames.content.window.frames.dockLayer" through a single variable.  Any way to do this?

Many thanks

Tom T
0
Comment
Question by:ttupper21
  • 2
5 Comments
 
LVL 63

Expert Comment

by:Zvonko
ID: 17983249
You already stated the answer in your question.
Here is the answer:
<script>

var dockNoSession = top.frames.content.frames.dockLayer;
dockNoSession.setDockOpacity();

</script>



0
 

Author Comment

by:ttupper21
ID: 17983476
No, this doesn't work.  It tells me that dockNoSession is null or not an object unless the variable is local in scope.  That is, if I have a function, I MUST define the path variable locally.  If I declare the variable at a global level, then the browser rejects it.

I have verified this with a function as follows:

function adjustOpacity() {
  var dockNoSession = top.window.frames.content.window.frames.dockLayer;
  dockNoSession.setDockOpacity();
}

This works just fine.  However, the following will NOT:

var dockNoSession = top.window.frames.content.window.frames.dockLayer;

function adjustOpacity() {
  dockNoSession.setDockOpacity();
}

Merely moving the variable declaration to a global scope messes it up.  I need this global scope because if I wanted to declare it locally every time I used it, I would just use the direct call, like so:

top.window.frames.content.window.frames.dockLayer.setDockOpacity

What can be accounting for this strange scope behavior?
      
0
 
LVL 63

Accepted Solution

by:
Zvonko earned 500 total points
ID: 17983510
The timing is the problem.
You can assign the global var first AFTER the dockLayer frame is loaded.
So put the global var assignment in that frame document onLoad event handler.

0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Preface This article introduces an authentication and authorization system for a website.  It is understood by the author and the project contributors that there is no such thing as a "one size fits all" system.  That being said, there is a certa…
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
The viewer will learn how to count occurrences of each item in an array.
HTML5 has deprecated a few of the older ways of showing media as well as offering up a new way to create games and animations. Audio, video, and canvas are just a few of the adjustments made between XHTML and HTML5. As we learned in our last micr…

837 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question