// 全屏

// ele:全屏的对象

function requestFullscreen(ele) {

    // 全屏兼容代码

    if (ele.requestFullscreen) {

        ele.requestFullscreen();

    } else if (ele.webkitRequestFullscreen) {

        ele.webkitRequestFullscreen();

    } else if (ele.mozRequestFullScreen) {

        ele.mozRequestFullScreen();

    } else if (ele.msRequestFullscreen) {

        ele.msRequestFullscreen();

    }

}

// 取消全屏

function exitFullscreen() {

    if (document.exitFullscreen) {

        document.exitFullscreen();

    } else if (document.webkitExitFullscreen) {

        document.webkitExitFullscreen();

    } else if (document.msExitFullscreen) {

        document.msExitFullscreen();

    } else if (document.mozCancelFullScreen) {

        document.mozCancelFullScreen();

    }

}