在Javascript中实现与全屏相反的功能

我用这段代码实现了全屏显示的按钮，工作正常。 我想做相反的事，我怎么能做到呢？ 谢谢你的帮助

HTML

---

您可以使用此功能：

function exitFullscreen() {
    if (document.exitFullscreen) {
        document.exitFullscreen();
    } else if (document.msExitFullscreen) {
        document.msExitFullscreen();
    } else if (document.mozCancelFullScreen) {
        document.mozCancelFullScreen();
    } else if (document.webkitExitFullscreen) {
        document.webkitExitFullscreen();
    }
}

---

您可以使用此功能：

function exitFullscreen() {
    if (document.exitFullscreen) {
        document.exitFullscreen();
    } else if (document.msExitFullscreen) {
        document.msExitFullscreen();
    } else if (document.mozCancelFullScreen) {
        document.mozCancelFullScreen();
    } else if (document.webkitExitFullscreen) {
        document.webkitExitFullscreen();
    }
}

---

答案与我的例子是一致的

            // Event listener for the full-screen button
            fullScreenButton.addEventListener("click", function()
            {
                if (player.requestFullscreen)
                {
                    player.requestFullscreen();
                }
                else if (player.mozRequestFullScreen)
                {
                    player.mozRequestFullScreen(); // Firefox
                }
                else if (player.webkitRequestFullscreen)
                {
                    player.webkitRequestFullscreen(); // Chrome and Safari
                }
            });


            // Event listener for the full-screen button
            normalScreenButton.addEventListener("click", function()
            {
                if(document.exitFullscreen)
                {
                    document.exitFullscreen();
                }
                else if(document.mozCancelFullScreen)
                {
                    document.mozCancelFullScreen();
                }
                else if(document.webkitExitFullscreen)
                {
                    document.webkitExitFullscreen();
                }
            });

---

答案与我的例子是一致的

            // Event listener for the full-screen button
            fullScreenButton.addEventListener("click", function()
            {
                if (player.requestFullscreen)
                {
                    player.requestFullscreen();
                }
                else if (player.mozRequestFullScreen)
                {
                    player.mozRequestFullScreen(); // Firefox
                }
                else if (player.webkitRequestFullscreen)
                {
                    player.webkitRequestFullscreen(); // Chrome and Safari
                }
            });


            // Event listener for the full-screen button
            normalScreenButton.addEventListener("click", function()
            {
                if(document.exitFullscreen)
                {
                    document.exitFullscreen();
                }
                else if(document.mozCancelFullScreen)
                {
                    document.mozCancelFullScreen();
                }
                else if(document.webkitExitFullscreen)
                {
                    document.webkitExitFullscreen();
                }
            });