Check if user is using IE with compatibility mode
I am looking for some code (either PHP or JavaScript) would work well to check if a user viewing a page is using compatibility mode. Then I can use that code to do some conditional statements, or basically give them a notification to turn it off. Force them to: <meta http-equiv="X-UA-Compatible" content="IE=edge" /> This will disable Compatibility View, unless the user then goes and specifically turns it off by going into the Developer Tools and changing it. I use: try{ JSON } catch (e){ alert("Compatibility Mode Detected") } 来源: https://stackoverflow.com/questions/10020011/check-if-user-is