Javascript判断Video视频播放、暂停、结束完成及获取长度事件监听处理

<video id="myVideo" controls="controls">
    <source type="video/mp4" src="mi.mp4">
video>

<script>
	function videoInit(){
        let elevideo = document.getElementById('myVideo');
        elevideo.addEventListener('loadedmetadata', () => {
            //视频的总长度
            console.log('总长度:' + elevideo.duration);
            clearInterval(this.timer);
        });
        elevideo.addEventListener('play', () => {
            //播放开始执行的函数
            console.log('开始播放');
        });
        elevideo.addEventListener('playing', () => {
            //播放中
            console.log('播放中');
            this.timer = setInterval(() => {
                console.log('播放进度:' + parseFloat(elevideo.currentTime));
            }, 100);
        });
        elevideo.addEventListener(
            'ended',
            () => {
                //结束
                console.log('播放结束');
                clearInterval(this.timer);
            },
            false
        );
    };
    
	// 禁止快进
	var sym;
	var video = document.querySelector("myVideo")
	setInterval(function () {
	    var time = video.currentTime
    	if (time - sym > 1) {
      		video.currentTime = sym
    	}
    	sym = video.currentTime
  }, 500);

</script>

其它参考
https://www.cnblogs.com/xxflz/p/10160879.html
https://blog.csdn.net/weixin_49577940/article/details/119251184
https://segmentfault.com/q/1010000002740363?_ea=195739