title: How to stay full screen when trigger upload file?
body: <p>I'm recently use <code>element.requestFullScreen()</code> to enter full screen mode from my div. However, in my full screen view there's a button could trigger upload file function.</p>
  
  <p>Is it possible for me to force stay in full screen mode while default select file window pop up?</p>
  
  <p>simple demo in steps with jsfiddle
  1. click full screen button to full screen mode
  2. click file upload input</p>
  
  <p><a href="https://jsfiddle.net/56yzokra/3/" rel="noreferrer">https://jsfiddle.net/56yzokra/3/</a></p>
  
  <p>Thanks for reminding me for a simple demo to make it clear</p>