IE Developer Tools - Standard (page default) v/s IE9 Standards?

877 Views Asked by Christian Stahl At 26 August 2013 at 09:29

I'm building on a site and test the stuff in IE10. I would like to check backward compatibility with IE Developer Tools, so I switch to Browsermode: IE9. Next, I can set IE9 standards or Standard (page default), this gives me different results when I load the page.

Do I need to care testing IE9 standards, if I set a DOCTYPE in the page's <head> in my HTML page? Isn't Standard (page default) what a user that uses IE9 with standard settings should be able to experience when the page renders?

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rocky On 17 September 2013 at 20:11

In my experience the most relevant configuration for testing IEs is to set both browser mode and document mode to the same version. That is, in your case, IE 9 and IE 9 standards.

Kfunk On 02 October 2013 at 17:15

You're right, Jawa, keeping the browser and document modes the same is the way to check (approximately) how IE will render for past versions. I think Standard (page default) is meaning IE10 standards in this case, so using that instead of the IE9 standards when you are in browser mode IE9 would definitely cause a different render.

The only reason I am aware of to have a different document mode from the browser mode is if you are setting it that way on purpose and designing for it. This old blog post is decent background:

http://blogs.msdn.com/b/ie/archive/2010/10/19/testing-sites-with-browser-mode-vs-doc-mode.aspx

IE Developer Tools - Standard (page default) v/s IE9 Standards?

There are 2 best solutions below

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