an HTML attribute for the iframe tag
  1. Welcome
  2. Examples
    1. CSS
    2. iframe
    3. React
    4. Vimeo
    5. YouTube
  3. Errors
  4. Anecdotes


  1. querySelectorAll()
  2. Questions LLC


allowfullscreen is also used as an HTML parameter in Flash videos. The default value is false; therefore developers must add the following code to their list of parameters to enable fullscreen:

<param name="allowfullscreen" value="true">