What does <meta http-equiv=“X-UA-Compatible” content=“IE=edge”> do?

Question

What\'s the difference if one web page starts with

Answer 1

Just for completeness, you don't actually have to add it to your HTML (which is unknown http-equiv in HTML5)

Do this and never look back (first example for apache, second for nginx)

Header set X-UA-Compatible "IE=Edge,chrome=1"

add_header X-UA-Compatible "IE=Edge,chrome=1";