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Referring to a child window?

 
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I have an HTML page where user needs to login to view the page.

Then there's a link in the HTML page.
When user clicks the link, it opens a pop-up box.

How do I close this pop-up box when I sign out from the parent page?
Is there anyway to do this?
 
Sheriff
Posts: 13411
Firefox Browser VI Editor Redhat
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The window.open function returns a handle to the newly created window.
You can assign that to a var and use that to refer to it.
 
Susan Smith
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Thank you. It's working great.
 
Susan Smith
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Actually, there's one problem.

I have external javascript called myjavascript.js




Then when i logout in the parent page, let's call it A.html, I do this below:



The code works fine in this case:
1.) Open A.html
2.) Click a link in A.html to open "mywindow"
3.) Sign out, then I see that 'mywindow' is also closed when I click "Sign out"

But not in this case:
1.) Open A.html
2.) Click a link in A.html to open "mywindow"
3.) Reload A.html
4.) Sign out, then I see that "mywindow" is not closed when I click "Sign out"

I think it's because in step. #3, the mywindow variable is initialized to "undefined" again. How do I prevent this from happening?
 
Sheriff
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You don't. Once the parent window is unloaded, any reference to the child is lost.
 
author
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Once the page is refresh, navigated away form, posted back, etc all of the JavaScript variables are killed. There is no way to keep this from happening so the child window will be orphaned.

You can close the window with onbeforeunload or onunload and reopen it when the page is loaded again. Other than that, you are out of luck.

Eric
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