原聲js控制瀏覽器全屏或者退出全屏

開啓全屏

 if (document.documentElement.requestFullscreen) {
      document.documentElement.requestFullscreen();
}
 //FireFox
 else if (document.documentElement.mozRequestFullScreen) {
      document.documentElement.mozRequestFullScreen();
}
 //Chrome等
else if (document.documentElement.webkitRequestFullScreen) {
     document.documentElement.webkitRequestFullScreen();
}
//IE11
else if (document.documentElement.msRequestFullscreen) {
      document.body.msRequestFullscreen();
}

退出全屏

if (document.exitFullscreen) {
 　　document.exitFullscreen();
}
else if (document.msExitFullscreen) {
    document.msExitFullscreen();
}
else if (document.mozCancelFullScreen) {
    document.mozCancelFullScreen();
}
else if (document.webkitCancelFullScreen) {
    document.webkitCancelFullScreen();
}else {
    window.parent.showTopBottom();
}