JavaScript Library For Old Internet Explorer Detection – IE Cap

IE Cap is a lightweight JavaScript library that detects Microsoft’s IE browser and notices if versions is less than IE 9.

How to use it:

Put the iecap.min.js script at the bottom of your webpage.

<script src="iecap.min.js"></script>

Get the IE browser version.

var ie = iecap.displayVersion();

Do something if the version is less than IE 9.

if(ie && ie <= 9) {
  // do something
}