Browser detection script from http://www.quirksmode.org/js/detect.html

browserdetect.js

var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent) || this.searchVersion(navigator.appVersion) || "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i = 0; i < data.length; i++) {
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			} else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index + this.versionSearchString.length + 1));
	},
	dataBrowser: [{
		string: navigator.userAgent,
		subString: "Chrome",
		identity: "Chrome"
	}, {
		string: navigator.userAgent,
		subString: "OmniWeb",
		versionSearch: "OmniWeb/",
		identity: "OmniWeb"
	}, {
		string: navigator.vendor,
		subString: "Apple",
		identity: "Safari",
		versionSearch: "Version"
	}, {
		prop: window.opera,
		identity: "Opera",
		versionSearch: "Version"
	}, {
		string: navigator.vendor,
		subString: "iCab",
		identity: "iCab"
	}, {
		string: navigator.vendor,
		subString: "KDE",
		identity: "Konqueror"
	}, {
		string: navigator.userAgent,
		subString: "Firefox",
		identity: "Firefox"
	}, {
		string: navigator.vendor,
		subString: "Camino",
		identity: "Camino"
	}, { // for newer Netscapes (6+)
		string: navigator.userAgent,
		subString: "Netscape",
		identity: "Netscape"
	}, {
		string: navigator.userAgent,
		subString: "MSIE",
		identity: "Explorer",
		versionSearch: "MSIE"
	}, {
		string: navigator.userAgent,
		subString: "Gecko",
		identity: "Mozilla",
		versionSearch: "rv"
	}, { // for older Netscapes (4-)
		string: navigator.userAgent,
		subString: "Mozilla",
		identity: "Netscape",
		versionSearch: "Mozilla"
	}],
	dataOS: [{
		string: navigator.platform,
		subString: "Win",
		identity: "Windows"
	}, {
		string: navigator.platform,
		subString: "Mac",
		identity: "Mac"
	}, {
		string: navigator.userAgent,
		subString: "iPhone",
		identity: "iPhone/iPod"
	}, {
		string: navigator.platform,
		subString: "Linux",
		identity: "Linux"
	}]

};
BrowserDetect.init();

Need an update to detect IE11:
{
string: navigator.userAgent,
subString: ".NET",
identity: "Explorer",
versionSearch: "rv"
},

I can't believe nobody forked this before. I was the first 😊

This failed with IE11. Can you please update it.

Hi, as noted by other comments, IE 11 not detected properly anymore, because Microsoft removed "MSIE" from the user-agent. We now end up with something like

Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko

which is detected as simply "Mozilla".

After looking up on https://fr.wikipedia.org/wiki/User-Agent#Navigateurs , I think using "Trident" could be a fairly good discriminant ?

For me, adding this discriminant seem to work fine :

		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		// Added this discriminant for improved IE compatibility
		{
			string: navigator.userAgent,
			subString: "Trident",
			identity: "Explorer",
			versionSearch: "Trident"
		},

Hi, I applied this patch but is returning Version = "7" which may be confusing with the detection of real Explorer 7, right? in my case is not working properly.