title: vanilla javascript preview video file before upload - NO JQUERY
body: <p>I have been searching for code to preview a video in client side before upload. I have seen MANY with Jquery. Personally i find external libraries bulky..... yet they rely on vanilla javascript to function (ironic..).
  Previously, i found a page that describes this functionality. I can no longer find it.... so i am reaching out to the SO community. NOT asking for an application, or ready made code. looking for direction to tutorials/blogs that i can read to make this possible.
  TY in advance</p>