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Asked: 2026-05-11T13:23:59+00:00

I’m using an iframe to integrate two of our customer’s apps. I’d like the

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I’m using an iframe to integrate two of our customer’s apps. I’d like the iframe’s location to persist even when the top level window is refreshed.

Example:

  • user loads http://myserver/main.page?target=‘sub.page’ in his browser
  • my Javascript code sets the source of the iframe to ‘sub.page’
  • user clicks a link within the iframe and the iframe’s source becomes ‘othersub.page’
  • user clicks a link within the top level window , outside of iframe, that links to http://myserver/main.page
  • Javascript somehow automatically updates the iframe’s source back to ‘othersub.page’

I can workout all the logic I need to take the iframe update actions and pass variables around. My issue is how to track the iframe’s src value.

I need a way to detect that the iframe’s src has changed. The only thing I can think of is ‘polling’ the value. I’d be interested to find out if someone has a better idea.

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1 Answer

  1. You can also add a ‘load’ event handler to this frame. Every time this event occurs, you would store the framed documents’ location in a cookie.

    IIRC, when the content of an iframe changes, the SRC attribute doesn’t change. IMO, you have to read the location of the document.

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