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Editorial Team
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Asked: 2026-05-31T06:53:47+00:00

I have an iframe on a subdomain foo.mysite.com. I want to access the contents

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I have an iframe on a subdomain foo.mysite.com. I want to access the contents of a table within the iframe, which has a URL on bar.mysite.com. I can alter foo.mysite.com, but not bar.mysite.com. Hence, I just set document.domain on foo.mysite.com to bar.mysite.com. However, Chrome Developer Tools is still complaining 

Uncaught Error: SECURITY_ERR: DOM Exception 18

I suspect that the Same Origin Policy requires both sites to explicitly set the same document.origin value. Is there any way I could temporarily disable XSS checking on Chrome to access the iframe’s elements? I just want to scrape some data from a table in the iframed page using Javascript.

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1 Answer

  1. Editorial Team

    Yes, it’s due to Same Origin Policy. You can disable it for you, but not for others. You must add this argument to chrome shortcut :

    --disable-web-security
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