javascript - How to show webapp's header bar on top of the external websites? -


let's suppose webapp has list of external urls. user clicks 1 of urls , goes website. how show first webapp's header on top of other websites?

http://www.stumbleupon.com/

these guys use iframe purpose, if try add page pinterest, example, stumbleupon's header , blank body because x-frame-options of pinterest set sameorigin.

to knowledge there no way put own app's header above site's content without using iframe, , without extension there no way bypass same origin rule.

if create chrome extension, should able request cross-origin permissions, , code should allowed embed unembeddable iframes.

from chrome docs:

by adding hosts or host match patterns (or both) permissions section of manifest file, extension can request access remote servers outside of origin.

{           "name": "my extension",    ...    "permissions": [      "http://www.google.com/"    ],    ...  }

so should able add pattern * request cors permissions on sites chrome extension. permissions section designed ajax requests i'm not 100% sure approach works iframes, give shot.

from cursory research looks might not able request cross-origin permissions firefox extensions, unfortunately, chrome only.


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