JS code to determine browser type IE, FF, Opera, Safari, Chrome and version

This article mainly shared the judgment of IE, FF, Opera, Safari, Chrome and other browser and version of the two methods, the need for friends can refer to the following

Because IE10-IE11 version problem, no longer support document.all judgment, so IE judgment function to re-write

function Isie () {//ie?      if (!! Window. ActiveXObject | | "ActiveXObject" in window)        return true;      else        return false;    }

First, only the browser is distinguished, regardless of the version

The code is as follows:
function Mybrowser () {
var useragent = navigator.useragent; Get the useragent string for the browser
var Isopera = Useragent.indexof ("Opera") >-1;
if (Isopera) {
Return "Opera"
}; Determine if Opera browser
if (Useragent.indexof ("Firefox") >-1) {
return "FF";
}//Determine if Firefox browser
if (Useragent.indexof ("Chrome") >-1) {
return "Chrome";
}
if (Useragent.indexof ("Safari") >-1) {
return "Safari";
}//Determine if Safari browser
if (Useragent.indexof ("compatible") >-1 && useragent.indexof ("MSIE") >-1 &&!isopera) {
return "IE";
}; Determine if IE browser
}

Here is the function called above
var mb = Mybrowser ();
if ("IE" = = MB) {
Alert ("I am IE");
}
if ("FF" = = MB) {
Alert ("I am Firefox");
}
if ("Chrome" = = MB) {
Alert ("I am Chrome");
}
if ("Opera" = = MB) {
Alert ("I am Opera");
}
if ("Safari" = = MB) {
Alert ("I am Safari");
}

Second, differentiate the browser, and consider IE5.5 6 7 8

The code is as follows:

function Mybrowser () {
var useragent = navigator.useragent; Get the useragent string for the browser
var Isopera = Useragent.indexof ("Opera") >-1; Determine if Opera browser
var Isie = Useragent.indexof ("compatible") >-1 && useragent.indexof ("MSIE") >-1 &&!isopera; Determine if IE browser
var IsFF = Useragent.indexof ("Firefox") >-1; Determine if Firefox browser
var Issafari = Useragent.indexof ("Safari") >-1; Determine if Safari browser
if (Isie) {
var IE5 = IE55 = IE6 = IE7 = IE8 = false;
var reie = new RegExp ("MSIE (\\d+\\.\\d+);");
Reie.test (useragent);
var fieversion = parsefloat (regexp["$"]);
IE55 = Fieversion = = 5.5;
IE6 = Fieversion = = 6.0;
IE7 = Fieversion = = 7.0;
IE8 = Fieversion = = 8.0;
if (IE55) {
return "IE55";
}
if (IE6) {
return "IE6";
}
if (IE7) {
return "IE7";
}
if (IE8) {
return "IE8";
}
}//isie End
if (IsFF) {
return "FF";
}
if (Isopera) {
return "Opera";
}
}//mybrowser () End
Here is the function called above
if (mybrowser () = = "FF") {
Alert ("I am Firefox");
}
if (mybrowser () = = "Opera") {
Alert ("I am Opera");
}
if (mybrowser () = = "Safari") {
Alert ("I am Safari");
}
if (mybrowser () = = "IE55") {
Alert ("I am IE5.5");
}
if (mybrowser () = = "IE6") {
Alert ("I am IE6");
}
if (mybrowser () = = "IE7") {
Alert ("I am IE7");
}
if (mybrowser () = = "IE8") {
Alert ("I am IE8");
}

JS code to determine browser type IE, FF, Opera, Safari, Chrome and version