vue全屏事件（无需安装插件）

template(html)中写

 <div class="btn-fullscreen" @click="handleFullScreen">
      <el-tooltip effect="dark" :content="fullscreen ? `取消全屏`:`全屏`" placement="bottom">
          <i class="el-icon-rank"></i>
      </el-tooltip>
</div>

script中data加上一个变量控制

data(){
	return {
		fullscreen: false
	}
}  

methods中写方法

			// 全屏事件
			handleFullScreen(){
                let element = document.documentElement;
                if (this.fullscreen) {
                    if (document.exitFullscreen) {
                        document.exitFullscreen();
                    } else if (document.webkitCancelFullScreen) {
                        document.webkitCancelFullScreen();
                    } else if (document.mozCancelFullScreen) {
                        document.mozCancelFullScreen();
                    } else if (document.msExitFullscreen) {
                        document.msExitFullscreen();
                    }
                } else {
                    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;
			}