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With F12 developer tools in IE10, websites can be rendered as if in earlier IE versions. When doing so however, JavaScript still seems to operate in the context of IE10. Set the page to render as IE7 and run 'JSON' in window in the console. It returns true. In an actual IE7 browser, it returns false.
Basically I want to use the F12 console to verify supported JavaScript features of earlier IE versions.
Have you set both “Browser mode” and “Document mode” to IE7?
When I do a test, browser mode to IE7 and document mode to IE9 than JSON gives me a return.
When also putting Document mode to IE7 (standards) I get JSON is undefined.