JSFiddle - React, Tailwind, and code Playground

HTML

<div class="mediaPlayerContainer mediaPlayerFullScreen" style="width: 100%; height: 100%;"><video id="idEmbedMediaWebPart" onloadstart="" src="/_layouts/15/clientbin/mediaplaceholder.mp4" poster="https://dev.toolbox.inter-ikea.com/sites/content/PublishingImages/Test_Video_1_MP4/Preview%20Images/Test_Video_1_MP4_mp4.png" data-init="1"><source src="https://dev.toolbox.inter-ikea.com/sites/content/PublishingImages/Test_Video_1_MP4/Test_Video_1_MP4.mp4" type="video/mp4" data-label="">

            <object width="100%" height="100%" id="idEmbedMediaWebPart" data="data:application/x-silverlight-2," type="application/x-silverlight-2">
                <param name="source" value="/_layouts/15/clientbin/mediaplayer.xap?rev=GohwcTo4onwCGghg2kd2yQ%3D%3D">
                <param name="enableHtmlAccess" value="true">
                <param name="windowless" value="true">
                <param name="background" value="#80808080">
                <param name="initParams" value="mediaSource=https://dev.toolbox.inter-ikea.com/sites/content/PublishingImages/Test_Video_1_MP4/Test_Video_1_MP4.mp4,previewImageSource=https://dev.toolbox.inter-ikea.com/sites/content/PublishingImages/Test_Video_1_MP4/Preview%20Images/Test_Video_1_MP4_mp4.png,showEmbedControl=true,videoSetSource=https://dev.toolbox.inter-ikea.com/sites/content/PublishingImages/Test_Video_1_MP4,startPlayBackAt=0">

                <a style="text-decoration: none;" href="http://go.microsoft.com/fwlink/?LinkID=124807"><img style="" alt="Get Microsoft Silverlight" src="http://go.microsoft.com/fwlink/?LinkId=108181"></a><a title="Download Media" class="media-link" href="https://dev.toolbox.inter-ikea.com/sites/content/PublishingImages/Test_Video_1_MP4/Test_Video_1_MP4.mp4"><span class="media-title">Download Media</span></a>
            </object>
</video><ul class="mediaPlayerAdditionalControls"><li class="mediaPlayerControl" draggable="false"><a title="Full Screen" draggable="false" href="javascript:;"><span style="width:...

CSS

p {
    font-family: sans-serif;
}

JavaScript

var x="AAA";
var x = var $video = $('#divVideo video'),
//document.getElementById("idEmbedMediaWebPart").src;
alert(x);