Internet Explorer 11 检测

Question

I know IE 11 has different user agent string than all other IE

 Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv 11.0) like Gecko

I have tried to detect IE 11 with answer specified for this question'

Jquery fail to detect IE 11

Thats !!navigator.userAgent.match(/Trident\\/7\\./)

But I am getting error Object not found and needs to be re-evaluated.

Then I openede developer console in IE11 and tried to access some predefined javascript objects, I am still getting same error.

I have tried

navigator.userAgent

window.navigator

console.log('test');

Anyone have any idea about it ?

Answer 1

Edit 18 Nov 2016

This code also work ( for those who prefer another solution , without using ActiveX )

var isIE11 = !!window.MSInputMethodContext && !!document.documentMode;
  // true on IE11
  // false on Edge and other IEs/browsers.

Original Answer

In order to check Ie11 , you can use this : ( tested)

(or run this )

!(window.ActiveXObject) && "ActiveXObject" in window

I have all VMS of IE :

Notice : this wont work for IE11 :

as you can see here , it returns true :

So what can we do :

Apparently , they added the machine bit space :

ie11 :

"Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; .NET4.0E; .NET4.0C; .NET CLR 3.5.30729; .NET CLR 2.0.50727; .NET CLR 3.0.30729; rv:11.0) like Gecko"

ie12 :

"Mozilla/5.0 (Windows NT 6.3; Win64; x64; Trident/7.0; .NET4.0E; .NET4.0C; .NET CLR 3.5.30729; .NET CLR 2.0.50727; .NET CLR 3.0.30729; rv:11.0) like Gecko"

so we can do:

/x64|x32/ig.test(window.navigator.userAgent)

this will return true only for ie11.

Answer 2

To detect MSIE (from version 6 to 11) quickly:

if(navigator.userAgent.indexOf('MSIE')!==-1
|| navigator.appVersion.indexOf('Trident/') > -1){
   /* Microsoft Internet Explorer detected in. */
}

Answer 3

I use the following function to detect version 9, 10 and 11 of IE:

function ieVersion() {
    var ua = window.navigator.userAgent;
    if (ua.indexOf("Trident/7.0") > -1)
        return 11;
    else if (ua.indexOf("Trident/6.0") > -1)
        return 10;
    else if (ua.indexOf("Trident/5.0") > -1)
        return 9;
    else
        return 0;  // not IE9, 10 or 11
}  

Answer 4

All of the above answers ignore the fact that you mention you have no window or navigator :-)

Then I openede developer console in IE11

and thats where it says

Object not found and needs to be re-evaluated.

and navigator, window, console, none of them exist and need to be re-evaluated. I've had that in emulation. just close and open the console a few times.

Answer 5

A pretty safe & concise way to detect IE 11 only is

if(window.msCrypto) {
    // I'm IE11 for sure
}

or something like this

var IE11= !!window.msCrypto;

msCrypto is a prefixed version of the window.crypto object and only implemented in IE 11.
https://developer.mozilla.org/en-US/docs/Web/API/Window/crypto

Answer 6

Okay try this, simple and for IE11 and IE below 11 version

browserIsIE = navigator.userAgent.toUpperCase().indexOf("TRIDENT/") != -1 || navigator.userAgent.toUpperCase().indexOf("MSIE") != -1;

navigator.userAgent.toUpperCase().indexOf("TRIDENT/") != -1 for IE 11 version navigator.userAgent.toUpperCase().indexOf("MSIE") != -1 for IE below 11 version

 browserIsIE = navigator.userAgent.toUpperCase().indexOf("TRIDENT/") != -1 || navigator.userAgent.toUpperCase().indexOf("MSIE") != -1; console.log('Is IE Browser : '+ browserIsIE)

Answer 7

And how I implemented this

<script type="text/javascript">
  !(window.ActiveXObject) && "ActiveXObject"
  function isIE11(){
    return !!navigator.userAgent.match(/Trident.*rv[ :]*11\./);
  }
</script>

Answer 8

This link was helpful . It contains the javascript code to detect all versions of IE up to IE11. I tested the script with IE11 emulator. To find the IE11 emulator, right-click on the web browser click "Inspect element". At the bottom-left of the page, scroll down the navigation bar and click the desktop icon. The "User Agent String" dropdown box contains options to emulate IE6-11.

It works. I just used it some minutes before writing this answer. Cannot post snapshots - not enough reputation.

---

This is the code - follow the link to view it again:

 // Get IE or Edge browser version var version = detectIE(); if (version === false) { document.getElementById('result').innerHTML = '<s>IE/Edge</s>'; } else if (version >= 12) { document.getElementById('result').innerHTML = 'Edge ' + version; } else { document.getElementById('result').innerHTML = 'IE ' + version; } // add details to debug result document.getElementById('details').innerHTML = window.navigator.userAgent; /** * detect IE * returns version of IE or false, if browser is not Internet Explorer */ function detectIE() { var ua = window.navigator.userAgent; // Test values; Uncomment to check result … // IE 10 // ua = 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; Trident/6.0)'; // IE 11 // ua = 'Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko'; // Edge 12 (Spartan) // ua = 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36 Edge/12.0'; // Edge 13 // ua = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Safari/537.36 Edge/13.10586'; var msie = ua.indexOf('MSIE '); if (msie > 0) { // IE 10 or older => return version number return parseInt(ua.substring(msie + 5, ua.indexOf('.', msie)), 10); } var trident = ua.indexOf('Trident/'); if (trident > 0) { // IE 11 => return version number var rv = ua.indexOf('rv:'); return parseInt(ua.substring(rv + 3, ua.indexOf('.', rv)), 10); } var edge = ua.indexOf('Edge/'); if (edge > 0) { // Edge (IE 12+) => return version number return parseInt(ua.substring(edge + 5, ua.indexOf('.', edge)), 10); } // other browser return false; }

 @import url(https://fonts.googleapis.com/css?family=Fira+Mono|Fira+Sans:300); body { color: black; background-color: white; font-family: "Fira Sans", sans-serif; font-weight: 300; margin: 0; padding: 3rem; } h1 { color: darkgrey; text-align: center; font-weight: 300; font-size: 1.5rem; line-height: 2rem; } h2 { text-align: center; font-weight: 300; font-size: 4rem; } p { color: darkgrey; text-align: center; font-family: "Fira Mono", monospace; font-size: 1rem; line-height: 1.5rem; }

 <h1>Detect IE/Edge version with JavaScript.<br> Updated to recognize Internet Explorer 12+ aka Edge.</h1> <h2 id="result">detecting…</h2> <p id="details">n/a</p>

Answer 9

Using this RegExp seems works for IE 10 and IE 11:

function isIE(){
    return /Trident\/|MSIE/.test(window.navigator.userAgent);
}

I do not have a IE older than IE 10 to test this.

Answer 10

Use Navigator:-

The navigator is an object that contains all information about the client machine's browser.

navigator.appName returns the name of the client machine's browser.

 navigator.appName === 'Microsoft Internet Explorer' || !!(navigator.userAgent.match(/Trident/) || navigator.userAgent.match(/rv:11/)) || (typeof $.browser !== "undefined" && $.browser.msie === 1) ? alert("Please dont use IE.") : alert("This is not IE")

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Answer 11

I found IE11 is giving more than one user agent strings in different environments.

Instead of relying on MSIE , and other approaches, It's better to rely on Trident version

const isIE11 = userAgent => userAgent.match(/Trident\/([\d.]+)/) ? +userAgent.match(/Trident\/([\d.]+)/)[1] >= 7;

Hope this helps :)

Answer 12

For a minimal approach and untill IE officially dies on the August 17th 2021 🥳✌️🎉 I'm using the IE conditional statement in reverse <!--[if !IE]> --><!-- <![endif]--> .

<style>
:root{display:none!important}
</style>
<!--[if !IE]> -->
<style>
:root{display:initial!important}
</style>
<!-- <![endif]-->