Object doesn't support property or method 'querySelector' in IE 10

Question

I encounter a problem with IE 10 regarding its support. The website is very good to use in other browser except IE.. I also tried using IE 11 and still it didn\'t work.

Answer 1

This can be caused by IE's compatibility mode. You can go under Compatibility View Settings and see if your sites domain is listed.

Answer 2

I think it's something else that is fails. http://caniuse.com/#feat=queryselector according to that the support should be there in IE10.

Make sure the IE is not using any compatability mode to view your site. Goto Settings > compatatibilty mode > make sure display intranet sites in compatability mode is NOT checked.

Answer 3

please see the IE9 equivalent of querySelectorAll and check the compatibility mode of your IE browser also.

Answer 4

IE Developer Tools [F12] was useful for me in diagnosing this (IE11):

• the toolbar on dev tools has a dropdown that lets you select IE compatibility version
• set the desired version using the dropdown on the toolbar, then refresh the page
• in my case the error went away when using version 8 or greater

To fix the issue, I ended up adding a meta tag as described here. (I actually added it via the web.config as shown here).

Answer 5

This should solve the problem:

• Delete all History
• Clear Cookies
• Reset IE settings