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Editorial Team
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Asked: 2026-05-25T10:23:27+00:00

I have some javascript that runs in Firefox and accesses the contents of a

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I have some javascript that runs in Firefox and accesses the contents of a second tab. I do not have control of the contents of the second tab.

When the second tab is HTML. I am able to read the contents of the tab as a string and also clear the tab contents using

document.documentElement.innerHTML

But I cannot figure out how to do this when there is an XML document loaded in the second tab (i.e. no enclosing html tag so innerHTML doesnt work). The two things I need to do are: (1) read tab contents, (2) clear tab contents.

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1 Answer

  1. Editorial Team

    Use XMLSerializer to convert a node tree to a string and DOMParser to convert a string to a node tree. As far as I know, they only work in Firefox, but as of Firefox 4, I believe they work in HTML documents as well as XML documents. Note that to clear nodes you can just use removeChild.

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