https://orenews.com/admin/js/jquery.platformselector.js

1/*
2 * platformSelector: a jQuery plugin
3 *
4 * platformSelector is a simple jQuery plugin that adds classes to the body
5 * element representing the browser's environment.  It adds classes for browser
6 * type, browser version, operating system, rendering engine and JS-enabled.
7 *
8 * For full documentation, visit:
9 * http://github.com/alexrabarts/jquery-platformselector
10 *
11 * Licensed under the MIT:
12 * http://www.opensource.org/licenses/mit-license.php
13 *
14 * Copyright (c) 2008 Stateless Systems (http://statelesssystems.com)
15 *
16 * @author   Alex Rabarts (alexrabarts -at- gmail -dawt- com)
17 * @requires jQuery v1.2 or later
18 * @version  0.1.1
19 */
20
21(function ($) {
22  function t(str, test) { return str.indexOf(test) !== -1; }
23  function uaIs(test) { return t(ua, test); }
24
25  var ua = navigator.userAgent.toLowerCase();
26
27  var ie = (!uaIs('opera') && !uaIs('webtv') && (/msie (\d+)/.test(ua))) ? 'ie ie_' + RegExp.$1 : '';
28
29  var os =
30    (uaIs('x11') || uaIs('linux')) ? 'linux' :
31    uaIs('mac')                    ? 'mac'   :
32    uaIs('win')                    ? 'win'   : '';
33
34  var classNames = [ie, os, 'js'];
35
36  var agents = ua.split(' ');
37
38  $.each(agents, function () {
39    if (!this.match(/(\w+)\/([^\s]+)/)) {
40      return;
41    }
42
43    var agent   = RegExp.$1;
44    var fullVersion = RegExp.$2.replace(/[\/\.]/g, '_');
45    var majorVersion = fullVersion.replace(/_.*/, '');
46
47    classNames  = classNames.concat([agent, agent + '_' + fullVersion, agent + '_' + majorVersion]);
48  });
49
50  // Safari splits the user agent into Safairi/<build> and Version/<version> so rename Version -> Safari
51  if ($.inArray('safari', classNames) !== -1 && $.inArray('version', classNames) !== -1) {
52    classNames = $.map(classNames, function (c) {
53      return c.replace('version', 'safari');
54    });
55  }
56
57  // Chrome incorrectly identifies itself as Safari
58  if ($.inArray('chrome', classNames) !== -1) {
59    classNames = $.map(classNames, function (c) {
60      return c.match(/^safari/) ? null : c;
61    });
62  }
63
64  var engineVersion = (
65    (ua.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [0,'0'])[1] // From jQuery 1.2.6
66  ).replace(/\./g, '_');
67
68  $.each(['opera', 'applewebkit', 'gecko'], function () {
69    if ($.inArray(String(this), classNames) !== -1) {
70      classNames.push(this + '_' + engineVersion);
71      return false;
72    }
73  });
74
75  // Deduplicate.  $.unique is only for DOM elements :-(
76  var seen = {};
77  classNames = $.map(classNames, function (c) {
78    if (seen[c] || c.match(/^mozilla/)) { // Mozilla so abused it's pretty much useless
79      return null;
80    } else {
81      seen[c] = true;
82      return c;
83    }
84  }).join(' ');
85
86  var html = $('html');
87  html.addClass(classNames); // Add to the html element now to avoid any FOUC
88
89  $(function () {
90    html.removeAttr('class');
91    $('body').addClass(classNames);
92  });
93})(jQuery);