IE11 browser support: Useful detection mechanisms

It’s so funny how little developers think about it. I don’t as well, but nowadays I am more aware of these little things that can make your work a nightmare.

Here is a little JS snippet to identify IE11 and a php function as well.

//IE11
navigator.userAgent.match(/Trident\/7\./)

// This one is pretty practical.
function GetIEVersion() {
  var sAgent = window.navigator.userAgent;
  var Idx = sAgent.indexOf("MSIE");

  // If IE, return version number.
  if (Idx > 0) 
    return parseInt(sAgent.substring(Idx+ 5, sAgent.indexOf(".", Idx)));

  // If IE 11 then look for Updated user agent string.
  else if (!!navigator.userAgent.match(/Trident\/7\./)) 
    return 11;

  else
    return 0; //It is not IE
}

if (GetIEVersion() > 0) 
   alert("This is IE " + GetIEVersion());
else 
   alert("This is not IE.");

function get_browser_name($user_agent)
{
	if (strpos($user_agent, 'Opera') || strpos($user_agent, 'OPR/')) return 'Opera';
	elseif (strpos($user_agent, 'Edge')) return 'Edge';
	elseif (strpos($user_agent, 'Chrome')) return 'Chrome';
	elseif (strpos($user_agent, 'Safari')) return 'Safari';
	elseif (strpos($user_agent, 'Firefox')) return 'Firefox';
	elseif (strpos($user_agent, 'MSIE') || strpos($user_agent, 'Trident/7')) return 'Internet Explorer';

	return 'Other';
}