IE version detection

by arcm111

JavaScript

var rv = 0;

  if (navigator.appName == 'Microsoft Internet Explorer')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null) rv = parseFloat( RegExp.$1 );
  }

console.log(rv ? true : false);