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Asked: 2026-06-17T23:08:06+00:00

Possible Duplicate: IE9 equivalent of querySelectorAll I’m trying to get all elements with the

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Possible Duplicate:
IE9 equivalent of querySelectorAll

I’m trying to get all elements with the classname “video” in some JS running in IE9. I’m using var videopanels = document.querySelectorAll(".video"); which is working great in Chrome.

Unfortunately I’m getting this error when I watch document.querySelectorAll(".video") in the debugger:

document.querySelectorAll(".video")
Object doesn't support property or method 'querySelectorAll'
Error

However, when I watch document in the debugger (it shows up as a DispHTMLDocument) and open up the [Methods] list, I see

querySelectorAll()
querySelectorAll(v)
IHTMLDOMChildrenCollection

What’s going on? How come I can see it in the debugger, but not (apparently) actually call or use it?

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1 Answer

  1. Editorial Team

    Change your doctype to html5 standards.

    <!DOCTYPE html>

    Also check IE9 isn’t operating in compatibility mode as this may cause it to ignore some methods it supports.

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