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JS function which returns active device detected by Bootstrap
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| /.idea/ |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| <title>getBootstrapDevice.js demo</title> | |
| <link rel="stylesheet" | |
| href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" | |
| integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" | |
| crossorigin="anonymous"> | |
| </head> | |
| <body> | |
| <dl> | |
| <dt>CSS</dt> | |
| <dd> | |
| <span class="visible-xs">xs</span> | |
| <span class="visible-sm">sm</span> | |
| <span class="visible-md">md</span> | |
| <span class="visible-lg">lg</span> | |
| </dd> | |
| <dt>JavaScript</dt> | |
| <dd> | |
| <span id="insertDeviceHere">unknown</span> | |
| </dd> | |
| </dl> | |
| <script type="application/javascript" | |
| src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.min.js" | |
| integrity="sha256-rsPUGdUPBXgalvIj4YKJrrUlmLXbOb6Cp7cdxn1qeUc=" | |
| crossorigin="anonymous"></script> | |
| <script type="application/javascript" | |
| src="getBootstrapDevice.js"></script> | |
| <script> | |
| $(function () { | |
| var prevDevice = null, onResize = function () { | |
| var device = getBootstrapDevice(); | |
| if (device != prevDevice) { | |
| prevDevice = device; | |
| onDeviceChange(device); | |
| } | |
| }, onDeviceChange = function (device) { | |
| $("#insertDeviceHere").html(device); // replace it by your code | |
| }; | |
| $(window).resize(onResize); | |
| onResize(); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| /** | |
| * Returns active device detected by Bootstrap | |
| * | |
| * @author Petr Knap <dev@petrknap.cz> | |
| * | |
| * @param {String} [testerId="getBootstrapDevice"] Identifier used for prepended div element | |
| * @param {String} [defaultDevice="lg"] Default device | |
| * | |
| * @returns {String} Active device (xs|sm|md|lg) | |
| */ | |
| function getBootstrapDevice(testerId, defaultDevice) { | |
| var $body, $tester; | |
| if(!testerId) { | |
| testerId = "getBootstrapDevice"; | |
| } | |
| if(!defaultDevice) { | |
| defaultDevice = "lg"; | |
| } | |
| $body = $("body"); | |
| $tester = $body.find("#" + testerId); | |
| if($tester.length == 0) { // Insert tester | |
| $body.prepend('' + | |
| '<div id="' + testerId + '" style="position: absolute; z-index: -999">' + | |
| ' <div class="visible-xs-block"> </div>' + | |
| ' <div class="visible-sm-block"> </div>' + | |
| ' <div class="visible-md-block"> </div>' + | |
| ' <div class="visible-lg-block"> </div>' + | |
| '</div>' + | |
| ''); | |
| return getBootstrapDevice(testerId, defaultDevice); | |
| } | |
| else { | |
| $tester.find("div").each(function() { | |
| if($(this).css("display") == "block") { | |
| defaultDevice = $(this).attr('class').split("-")[1]; | |
| return false; // Break the loop | |
| } | |
| }); | |
| return defaultDevice; | |
| } | |
| } |
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