Detect user's browser and run related example functions

detect-browsers.js

/**
 * Detect Browsers functions
 */

/* 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;
}

/* Sample functions that returns boolean in case the browser is Internet Explorer*/

function isIE() {
  ua = navigator.userAgent;
  /* MSIE used to detect old browsers and Trident used to newer ones*/
  var is_ie = ua.indexOf("MSIE ") > -1 || ua.indexOf("Trident/") > -1;
  
  return is_ie; 
}
/* Create an alert to show if the browser is IE or not */
if (isIE()){
    alert('It is InternetExplorer');
}else{
    alert('It is NOT InternetExplorer');
}

function BrowserDetection() {
    //Check if browser is IE
    if (navigator.userAgent.search("MSIE") & gt; = 0) {
        // insert conditional IE code here
    }
    //Check if browser is Chrome
    else if (navigator.userAgent.search("Chrome") & gt; = 0) {
        // insert conditional Chrome code here
    }
    //Check if browser is Firefox 
    else if (navigator.userAgent.search("Firefox") & gt; = 0) {
        // insert conditional Firefox Code here
    }
    //Check if browser is Safari
    else if (navigator.userAgent.search("Safari") & gt; = 0 & amp; & amp; navigator.userAgent.search("Chrome") & lt; 0) {
        // insert conditional Safari code here
    }
    //Check if browser is Opera
    else if (navigator.userAgent.search("Opera") & gt; = 0) {
        // insert conditional Opera code here
    }
}

function msieversion() {

    var ua = window.navigator.userAgent;
    var msie = ua.indexOf("MSIE ");

    if (msie > 0 || !!navigator.userAgent.match(/Trident.*rv\:11\./))  // If Internet Explorer, return version number
    {
        alert(parseInt(ua.substring(msie + 5, ua.indexOf(".", msie))));
    }
    else  // If another browser, return 0
    {
        alert('otherbrowser');
    }

    return false;
}

/**
 * https://stackoverflow.com/questions/13478303/correct-way-to-use-modernizr-to-detect-ie
 * https://stackoverflow.com/questions/19999388/check-if-user-is-using-ie
 */