How do I know if the content of my site is compatible with the meta tag X-UA-Compatible/IE=edge?

How can I tell if I should inc开发者_开发知识库lude this meta tag in my site?

<meta http-equiv="X-UA-Compatible" content="IE=edge">

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By testing it in various versions of IE (and, as a rule of thumb, if there are problems, fix the problems rather then telling IE to emulate an older version of itself).