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gaborpinterweb/isIE.js

Created June 6, 2017 12:43
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  1. Gábor Pintér created this gist Jun 6, 2017.
    59 changes: 59 additions & 0 deletions isIE.js
    View file
    Original file line number Diff line number Diff line change
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    // Forked from https://codepen.io/gapcode/pen/vEJNZN

    // 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;
    }