vue实现自定义H5视频播放器的方法步骤

  init() {
   // 初始化video,获取video元素
   this.$video = this.$el.getElementsByTagName("video")[0];
   this.initPlayer();
  },
  // 初始化播放器容器, 获取video-player元素
  // getBoundingClientRect()以client可视区的左上角为基点进行位置计算
  initPlayer() {
   const $player = this.$el;
   const $progress = this.$el.getElementsByClassName("progress")[0];
   // 播放器位置
   this.player.$player = $player;
   this.progressBar.$progress = $progress;
   this.player.pos = $player.getBoundingClientRect();
   this.progressBar.pos = $progress.getBoundingClientRect()
   this.video.progress.width = Math.round($progress.getBoundingClientRect().width);
  },

// 点击播放 & 暂停按钮
  clickPlayBtn() {
   if (this.state.isLoading) return;
   this.isFirstTouch = false;
   this.state.playing = !this.state.playing;
   this.state.isEnd = false;
   if (this.$video) {
    // 播放状态
    if (this.state.playing) {
     try {
      this.$video.play();
      this.isPauseTouch = false;
      // 监听缓存进度
      this.$video.addEventListener("progress", e => {
       this.getLoadTime();
      });
      // 监听播放进度
      this.$video.addEventListener(
       "timeupdate",
       throttle(this.getPlayTime, 100, 1)
      );
      // 监听结束
      this.$video.addEventListener("ended", e => {
       // 重置状态
       this.state.playing = false;
       this.state.isEnd = true;
       this.state.controlBtnShow = true;
       this.video.displayTime = "00:00";
       this.video.progress.current = 0;
       this.$video.currentTime = 0;
      });
     } catch (e) {
      // 捕获url异常出现的错误
     }
    }
    // 停止状态
    else {
     this.isPauseTouch = true;
     this.$video.pause();
    }
   }
  },

// 触碰播放区
  touchEnterVideo() {
   if (this.isFirstTouch) return;
   if (this.hideTimer) {
    clearTimeout(this.hideTimer);
    this.hideTimer = null;
   }
   this.state.controlBtnShow = true;
   this.state.controlBarShow = true;
  },
  // 离开播放区
  touchLeaveVideo() {
   if (this.isFirstTouch) return;
   if (this.hideTimer) {
    clearTimeout(this.hideTimer);
   }
   // 暂停触摸, 不隐藏
   if (this.isPauseTouch) {
    this.state.controlBtnShow = true;
    this.state.controlBarShow = true;
   } else {
    this.hideTimer = setTimeout(() => {
     this.state.controlBarShow = false;
     // 加载中只显示loading
     if (this.state.isLoading) {
      this.state.controlBtnShow = true;
     } else {
      this.state.controlBtnShow = false;
     }
     this.hideTimer = null;
    }, 3000);
   }
  },

// loading动画
@keyframes rotate {
 0% {
  transform: rotate(0deg);
 }
 50% {
  transform: rotate(180deg);
 }
 100% {
  transform: rotate(360deg);
 }
}

.loader {
 width: 58px;
 height: 58px;
 background: rgba(15, 16, 17, 0.3);
 border-radius: 50%;
 position: relative;
 .ball-clip-rotate {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  > div {
   width: 15px;
   height: 15px;
   border-radius: 100%;
   margin: 2px;
   animation-fill-mode: both;

   border: 2px solid #fff;
   border-bottom-color: transparent;
   height: 26px;
   width: 26px;
   background: transparent;
   display: inline-block;
   animation: rotate 0.75s 0s linear infinite;
  }
 }
}

// 获取播放时间
  getPlayTime() {
   const percent = this.$video.currentTime / this.$video.duration;
   this.video.progress.current = Math.round(
    this.video.progress.width * percent
   );
   // 赋值时长
   this.video.totalTime = timeParse(this.$video.duration);
   this.video.displayTime = timeParse(this.$video.currentTime);
  },
  // 获取缓存时间
  getLoadTime() {
   // console.log('缓存了...',this.$video.buffered.end(0));
   this.video.loaded =
    (this.$video.buffered.end(0) / this.$video.duration) * 100;
  },

// 手动调节播放进度
  moveStart(e) {},
  moveIng(e) {
   // console.log("触摸中...");
   let currentX = e.targetTouches[0].pageX;
   let offsetX = currentX - this.progressBar.pos.left;
   // 边界检测
   if (offsetX <= 0) {
    offsetX = 0
   }
   if (offsetX >= this.video.progress.width) {
    offsetX = this.video.progress.width
   }
   this.video.progress.current = offsetX;
   
   let percent = this.video.progress.current / this.video.progress.width;
   this.$video.duration && this.setPlayTime(percent, this.$video.duration)
  },
  moveEnd(e) {
   // console.log("触摸结束...");
   let currentX = e.changedTouches[0].pageX;
   let offsetX = currentX - this.progressBar.pos.left;
   this.video.progress.current = offsetX;
   // 这里的offsetX都是正数
   let percent = offsetX / this.video.progress.width;
   this.$video.duration && this.setPlayTime(percent, this.$video.duration)
  },
  // 设置手动播放时间
  setPlayTime(percent, totalTime) {
   this.$video.currentTime = Math.floor(percent * totalTime);
  },

// 设置全屏
  fullScreen() {
   console.log('点击全屏...');
   if (!this.state.fullScreen) {
    this.state.fullScreen = true;
    this.$video.webkitRequestFullScreen();
   } else {
    this.state.fullScreen = false;
    document.webkitCancelFullScreen();
   }