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Editorial Team
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Asked: 2026-05-14T01:12:02+00:00

I’ve got a question about CSS based popup windows, like those generated by jQuery

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I’ve got a question about CSS based popup windows, like those generated by jQuery UI’s dialog system, or Colorbox. If I use those (or something like them) to open a popup window to an HTML page and that page has Javascript in it, does the Javascript in the popup window run in its own context, or does it become part of the context of the Javascript in the parent window that opened it? I ask so that I can write the Javascript on both pages (parent and popup) so there is no namespace collision.

Thanks in advance!
Doug

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1 Answer

  1. Editorial Team

    That depends on the type of popup. (I’m assuming we are talking about in-page popups here and not window.open() ones that open a new browser window.)

    If it contains an IFRAME in which you load a separate page, then that page will have its own styles. You will have to re-load any CSS and JavaScript files you need.

    If it doesn’t contain an IFRAME, but just a regular DIV or other element into which content is loaded through AJAX (or directly output in the “parent” HTML page) then the popup will run in the context of the parent page.

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