5 ways to check IE version using JavaScript/jQuery

Detecting Internet Explorer Versions Using JavaScript and jQuery: A Comprehensive Guide

This guide compiles various methods for determining Internet Explorer versions using JavaScript and jQuery. If you know of additional techniques, please share them!

Method 1: Basic IE7 Check (JavaScript)

A simple check for Internet Explorer 7:

//check for IE7
if(navigator.appVersion.indexOf("MSIE 7.")!=-1) {
  // IE7 specific code here
}

Method 2: Using Modernizr (JavaScript)

Modernizr offers a robust way to detect browser features, including IE version.

//check for IE8 or less
if ($('html').hasClass('lt-ie8')) {
  // IE8 or lower specific code here
}
//example of HTML tag populated by modernizer

Method 3: jQuery's $.browser (Deprecated)

Note: $.browser is deprecated since jQuery 1.9. This method will not work in newer jQuery versions.

//check for IE8 or less (DEPRECATED)
if($.browser.msie && parseFloat($.browser.version)<8){
  //do other stuff
  return;
}

Method 4: CSS Conditional Injection (JavaScript)

This clever technique avoids user-agent sniffing:

var ie = (function(){
    var undef,
        v = 3,
        div = document.createElement('div'),
        all = div.getElementsByTagName('i');
    while (div.innerHTML = '', all[0]);
    return v > 4 ? v : undef;
}());

Method 5: IE10 Check (JavaScript)

A user-agent sniffing approach for detecting IE10:

(function() {
  "use strict";
  var tmp = (document["documentMode"] || document.attachEvent) && "ev",
       msie = tmp && (tmp = window[tmp + "al"]) && tmp("/*@cc_on 1;@*/") && +((/msie (d+)/i.exec(navigator.userAgent) || [])[1] || 0);
  return msie || void 0;
})();

Method 6: Basic HTML Conditionals

This is a common method, often seen directly within HTML:

<!--  Example: Conditional CSS inclusion -->
<!--[if IE 8]>
  <link rel="stylesheet" href="ie8.css">
<![endif]-->

Frequently Asked Questions (FAQs)

How to check IE version on Windows 10:

1. Open Internet Explorer.
2. Click the gear icon (top right).
3. Select "About Internet Explorer." A popup will display the version.

Why is knowing the IE version important?

Knowing the version ensures you're using the latest security updates and that websites and applications will function correctly.

Internet Explorer Updates:

Microsoft no longer updates Internet Explorer. IE11 receives security updates on Windows 7, 8.1, and 10.

Internet Explorer vs. Microsoft Edge:

Microsoft Edge is the successor to Internet Explorer, offering improved speed, security, and compatibility.

Internet Explorer on Mac/Mobile:

Internet Explorer is not available for Mac or mobile devices.

Checking JavaScript/jQuery Versions:

Use online tools (like JSFiddle or a JavaScript Tester) to check your JavaScript version. For jQuery, use jQuery.fn.jquery in your browser's console.

Troubleshooting Website Display Issues in IE:

Try using Internet Explorer's Compatibility View.

Remember to share any further methods or insights to help improve IE support!

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