1、div <div class="index_main" id="center">
</div>
2、js
let fullarea = document.getElementById('center') if (this.fullscreen) { // 退出全屏 if (document.exitFullscreen) { document.exitFullscreen(); } else if (document.webkitCancelFullScreen) { document.webkitCancelFullScreen(); } else if (document.mozCancelFullScreen) { document.mozCancelFullScreen(); } else if (document.msExitFullscreen) { document.msExitFullscreen(); } } else { // 进入全屏 if (fullarea.requestFullscreen) { fullarea.requestFullscreen(); } else if (fullarea.webkitRequestFullScreen) { fullarea.webkitRequestFullScreen(); } else if (fullarea.mozRequestFullScreen) { fullarea.mozRequestFullScreen(); } else if (fullarea.msRequestFullscreen) { // IE11 fullarea.msRequestFullscreen(); } } this.fullscreen = !this.fullscreen;