当用户不活跃时，如何隐藏我的自定义html5视频控件？

Question

I have some custom html5 video controls and I'd like to hide them when a user is watching the video. I'll wait two seconds and if they're not moving their mouse, I'll hide the controls, then when they move the mouse again I'll show the controls.

What's a practical, performing way to do this?

Answer 1

Use mousemove event with setTimeout

Clear the setTimeout if mouse is moving

 var elem = document.getElementById('controls'); var timeout; var duration = 3000; document.addEventListener('mousemove', function() { elem.textContent = 'Mouse is moving!' clearTimeout(timeout); timeout = setTimeout(function() { elem.textContent = 'Mouse Has stopped!' }, duration) }); 

 <div id="controls">Mouse Has stopped!</div> 

Fiddle Demo

---

Implementation using controls attribute

 var video = document.getElementById('videoElem'); var timeout; var duration = 500; document.addEventListener('mousemove', function() { video.setAttribute("controls", "controls"); clearTimeout(timeout); timeout = setTimeout(function() { video.removeAttribute("controls"); }, duration) }); 

 html { padding: 20px 0; background-color: #efefef; } body { width: 400px; padding: 40px; margin: 0 auto; background: #fff; box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.5); } video { width: 400px; display: block; } 

 <video preload controls id="videoElem"> <source id="mp4" src="http://grochtdreis.de/fuer-jsfiddle/video/sintel_trailer-480.mp4" type="video/mp4"> </video> 

Fiddle Demo

Answer 2

I ended up using the timeupdate event:

var counts = 0
function hideOnIdle (video) {
  if (video.paused === true) return controls.classList.remove('hidden')
  if (counts > 7) {
    controls.classList.add('hidden')
    counts = 0
  }
  counts += 1
}

document.addEventListener('mousemove', function (event) {
  controls.classList.remove('hidden')
  counts = 0
}, false)