How to correctly create HTML5 audio and video with JavaScript -

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I checked out and it seems that in javascript, we can create HTML5 audio in 2 ways, while the HTMLMax video Only one way:

Audio: 

  var audio = document.createElement ('audio');

or 

  var audio = new audio ();

Video: 

  var video = document.createElement ('video');

But is it true that new video () for HTML5 video?

// is not an equivalent manufacturer like: It seems there was no equivalent ..

Sorry, now there is no other way to dynamically use other than JavaScript in the video: 

  var video = document.createElement ('video');

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