video设置播放时间点及常用属性和方法

<!--autoplay=>自动播放 controls=>是否显示控件 loop=>是否循环播放 muted=>是否静音播放 poster=>视频封面 src=>播放源 preload=>页面加载时进行加载 , 如果有autoplay那么该属性就会被无视 src="https://media.w3.org/2010/05/sintel/trailer.mp4"-->
<video id="videoPlayer" width="100%" height="100%" loop controls :src="shareVideoLink"></video>

/**
   * 获取视频播放时长
*/
getVideoTime () {
    if (document.getElementById ('videoPlayer')) {
        let videoPlayer = document.getElementById ('videoPlayer');
        videoPlayer.addEventListener('timeupdate', function () {
         console.log(`当前的时间点是${videoPlayer.currentTime},视频长度是${videoPlayer.duration}`);
        }, false)
    }
}

//设置播放点，续播
playBySeconds (num) {
    if (num && document.getElementById ('videoPlayer')) {
        let myVideo = document.getElementById ('videoPlayer');
        myVideo.play ();
        myVideo.currentTime = num;
    }
},

<button type="button" onclick="play()">播放</button>
<button type="button" onclick="pause()">暂停</button>
<button type="button" onclick="load()">切换视频</button>
<button type="button" onclick="open_voice()">打开声音</button>
<button type="button" onclick="close_voice()">关闭声音</button>
<script type="text/javascript" charset="utf-8">
  var video = document.getElementById("video");
  function play(){
    video.play();
  }
  function pause(){
    video.pause();
  }
  function load(){
    video.src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4";
    video.load();
  }
  function open_voice(){
    video.muted = false;
  }
  function close_voice(){
    video.muted = true;
  }
  video.addEventListener("play", function(){
    console.log("视频播放")
  });
  video.addEventListener("pause", function(){
    console.log("视频暂停")
  });
  video.addEventListener("ended", function(){
    console.log("播放结束")
  });
  video.addEventListener("volumechange", function(e){
    if(video.muted){
      console.log("你关闭了声音")
      else{
      console.log("你打开了声音")
        }
  });
</script>