What is the compatibility mode of Internet Explorer for?

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I’m having trouble in layout with users using the Internet Explorer browser in compatibility view.

When using Internet Explorer version 11.0.21 in compatibility view mode what will be the version it will take? The previous or any specific?

  • Your question is too vague we can’t help you like this. Specify it.

  • My question is exactly how it is above, for what purpose does the compatibility display in internet explorer as it behaves, it assumes some previous version? or just start interpreting commands that are obsolete. Thank you!

  • you did not ask this question "What is the compatibility mode display in ie (...)" because that question is answered by Microsoft itself who developed this http://windows.microsoft.com/pt-br/internet-explorer/products/ie-9/features/compatibility-view

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Internet Explorer has several rendering modes for different browser versions. We have from 5 (called IE Quirks) to Edge which is the rendering mode associated with IE11 and implements several new CSS3 features.

Each version has new features and also makes obsolete behaviors/features that previously worked. In this link, Microsoft explains IE compatibility changes by version.

When IE receives an HTML, it will render the page using the rendering mode it deems most compatible. But you can also specify in HTML, through the Meta tag, which rendering version of IE is the most suitable for your page.

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

Remember that Microsoft Edge ignores this Meta tag.

Now, back to the question, to know exactly what version IE is using to display your site, go to developer tool (F12). In the emulator tab, it will indicate the default rendering mode of your site and, when in compatibility mode, the version of the rendering mode it is using.

For more information, the article "How to make IE better display my website?".

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