Solved

parent.document.getElementById from iFrame to parent not working

Posted on 2013-05-14
9
874 Views
Last Modified: 2013-05-14
An "onClick" call to a Javascript function to set the href of a button on a toolbar does not find the button when the call is made from an iFrame. The toolbar is in the main window.

alink = parent.document.getElementById('members_link');
or
alink = window.parent.document.getElementById('members_link');

This works when the link clicked is in the main window; it only fails when the link is in the iFrame.

I'm using Chrome, but also tested IE8.

Here's the menubar button:

<a id=members_link
      onClick=\"myLink='M'\"
      onmouseover=\"roll_over('members_button', 'images/menubar_Members_hi.jpg');\"
      onmouseout= \"roll_over('members_button', 'images/menubar_Members.jpg');\"
      href=\"directory.php\" target=main
      ><img class=menu_image src='images/menubar_Members.jpg' NAME=members_button></a>

The page only has this one iFrame.
0
Comment
Question by:wilri01
  • 4
  • 3
  • 2
9 Comments
 
LVL 42

Expert Comment

by:sedgwick
ID: 39163931
try this from inside the iframe:
var alink = parent.$(parent.document).getElementById('members_link');

Open in new window

0
 
LVL 42

Expert Comment

by:sedgwick
ID: 39164027
that might also work:
var alink = parent.$("members_link");

Open in new window

0
 

Author Comment

by:wilri01
ID: 39164032
sedgwick,
What do I need to do to use JQuery?
0
 
LVL 42

Expert Comment

by:sedgwick
ID: 39164061
add this:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

Open in new window

0
Maximize Your Threat Intelligence Reporting

Reporting is one of the most important and least talked about aspects of a world-class threat intelligence program. Here’s how to do it right.

 

Author Comment

by:wilri01
ID: 39164683
Sorry, but neither form works.
0
 
LVL 21

Accepted Solution

by:
Kim Walker earned 500 total points
ID: 39165960
The parent document and iframe document must be in the same domain for the child iframe document to access the parent DOM. It is considered a security issue when the documents are in separate domains.
0
 

Author Comment

by:wilri01
ID: 39166437
Yes, I was aware of that, but it is the same domain.

BUT... you got me thinking.  I looked at how the link is being constructed for the button, and found it includes "www." and the URL I used to get ot the page left that off.

So I add "www." to the URL, and the Javascript code now works!

So the problem is, how can I tell if the user entered the "www.", or left it off?  Maybe use a relative HREF that doesn't include the domain name?

Maybe some kind of "rewrite" in Apache to add the "www." if it isn't entered?

God, I'm so happy to see this working at all!  THANK YOU SO MUCH!!!
0
 
LVL 21

Expert Comment

by:Kim Walker
ID: 39166502
Can you use a relative url in the button link?
0
 

Author Closing Comment

by:wilri01
ID: 39166892
The trick is to NOT include the "www." in the link.  Then the user can use, or not use, the "www." and it works.

I've been working on this off and on for almost a year.  It feels so good to see this work!
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

Suggested Solutions

In Part 1 (http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/A_7849-Hex-Maze.html) we covered the hexagonal maze basics -- how the cells are represented in a JavaScript array and how the maze is displayed.  In this part, we'…
Boost your ability to deliver ambitious and competitive web apps by choosing the right JavaScript framework to best suit your project’s needs.
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

757 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

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now