vue如何实现视频全屏切换

最近项目开发中遇到一个视频窗口全屏切换功能，为此在这里做个记录。

具体的实现思路：

<template>
  <div class="content-box">
    <div class="container">
      <div id="screen" class="screen">
        <el-button @click="screen()">
          {{ fullscreen ? "还原" : "最大化" }}
        </el-button>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      fullscreen: false,
    };
  },
  mounted() {
    window.addEventListener("resize", ()=> {
      if (!this.isFullScreen()) {
        // 非全屏状态
        this.fullscreen = false;
      }
    });
  },
  methods: {
    //判断是否全屏
    isFullScreen() {
      return !!(document.webkitIsFullScreen || this.fullele());
    },
    fullele() {
      return (
        document.fullscreenElement ||
        document.webkitFullscreenElement ||
        document.msFullscreenElement ||
        document.mozFullScreenElement ||
        null
      );
    },
    screen() {
      let element = document.getElementById("screen");
      if (this.fullscreen) {
        // 关闭全屏
        if (document.exitFullscreen) {
          document.exitFullscreen();
        } else if (document.webkitCancelFullScreen) {
          document.webkitCancelFullScreen();
        } else if (document.mozCancelFullScreen) {
          document.mozCancelFullScreen();
        } else if (document.msExitFullscreen) {
          document.msExitFullscreen();
        }
      } else {
        // 全屏
        if (element.requestFullscreen) {
          element.requestFullscreen();
        } else if (element.webkitRequestFullScreen) {
          element.webkitRequestFullScreen();
        } else if (element.mozRequestFullScreen) {
          element.mozRequestFullScreen();
        } else if (element.msRequestFullscreen) {
          // IE11
          element.msRequestFullscreen();
        }
      }
      this.fullscreen = !this.fullscreen;
    },
  },
};
</script>

<style lang="scss" scoped>
.screen {
  width: 500px;
  height: 500px;
  background-color: #fff;
  border: 1px solid red;
}
</style>

这里需要监听ESC键，为此做了特殊处理，这里是Demo,跟使用效果图基本差不多