detect-ie.js

// Slightly modified version of Angular's method of checking for Internet Explorer (IE), including checking for IE11

function detectIE() {
	// check 6-10
	msie = parseInt((/msie (\d+)/.exec((navigator.userAgent).toLowerCase()) || [])[1]);
	if (isNaN(msie)) {
	  // not 6-10, check 11
	  msie = parseInt((/trident\/.*; rv:(\d+)/.exec((navigator.userAgent).toLowerCase()) || [])[1]);
	}
	 
	// will be a number if IE or NaN if not
	if (msie) {
	  $('body').addClass('ie ie' + msie);
	  alert('ie' + msie);
	}
}
detectIE();