<meta content= ' ie=edge,chrome=1 ' http-equiv= ' x-ua-compatible '/>

Code one: <meta http-equiv= "x-ua-compatible" content= "ie=edge,chrome=1" >

http-equiv= "X-ua-compatible" This is a special tag for IE8, which is used to specify how Internet Explorer 8 browser simulates the rendering of a particular version of IE, to solve the compatibility problem of IE browser.
For example, specify that the IE8 browser renders the interface using the IE6 rendering method.

Code two: <meta http-equiv = "x-ua-compatible" content = "Ie=emulateie7"/>

The content= "ie=edge,chrome=1" in code one represents the use of GCF (a Google Chrome frame"google chrome embedded framework that Google has developed- gcf") can make the user's IE browser look the same, but the user actually uses Chrome's kernel when browsing the Web page, and supports Windows XP and the IE6/7/8 of the above system. ie = Edge tells IE to render a webpage using the latest engine, chrome = 1 activates chrome frame (provided the user has already installed Google Chrome frame).

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<Metahttp-equiv="X-ua-compatible"Content=ie=7 > #以上代码告诉IE浏览器, IE8/9 renders the page with the IE7 engine, whether or not the document standard is declared with a DTD.<Metahttp-equiv="X-ua-compatible"Content="Ie=8" > #以上代码告诉IE浏览器, IE8/9 will render the page with the IE8 engine.<meta http-equiv= "x-ua-compatible" content=" Ie=edge "> #以上代码告诉IE浏览器, IE8/9 and later versions will render the page with the highest version of IE. <meta http-equiv= " X-ua-compatible "content=" ie=7,ie=9 "> <meta http-equiv= "x-ua-compatible" content= "ie=7,9" > <meta http-equiv= "x-ua-compatible" content= "ie=edge,chrome=1" > #以上代码IE =edge tells IE to render the Web page with the latest engine, chrome=1 can activate the chrome Frame.      

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<meta content= ' ie=edge,chrome=1 ' http-equiv= ' x-ua-compatible '/>