<video width="640" height="264" muted autoplay webkit-playsinline src="'+videoURL+'"></video>'

$(document).on("click",".containerVolume",function(e){
        if(isMuted){
            $('video').prop('muted', false);
        }
        else{
            $('video').prop('muted',true);
        }
});

var videos = document.querySelectorAll('video');
      if (location.search === '?enabled=false')
      {
      } else if (location.search === '?enabled=true') {
           enableVideos(false);
      } else {
         enableVideos();
      }
      function enableVideos(everywhere) {
          for (var i = 0; i < videos.length; i++) {
             window.makeVideoPlayableInline(videos[i], !videos[i].hasAttribute('muted'), !everywhere);
          }
      }

function toggleMute() {

  var video=document.getElementById("myVideo");

  if(video.muted){
    video.muted = false;
  } else {
    video.muted = true;
  }

}

var video=document.getElementById("myVideo") ;

$(video).on("click", function(e){
    if(video.muted){
        video.muted = false;
    }
    else{
        video.muted = true;
    }
});

document.getElementById("theIdOfYourVideoGoesHere").volume=0.9;

<video id="theIdOfYourVideoGoesHere" muted>

<video id="theIdOfYourVideoGoesHere">

document.getElementById("theIdOfYourVideoGoesHere").muted;