在退出全屏模式时防止跳到顶部

Question

如何在退出全屏模式时向该代码添加不跳到页面顶部的功能？非常感谢

$('#toggle_fullscreen').on('click', function(){
if (
document.fullscreenElement ||
document.webkitFullscreenElement ||
document.mozFullScreenElement ||
document.msFullscreenElement
) {
if (document.exitFullscreen) {
document.exitFullscreen();
} else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
} else if (document.webkitExitFullscreen) {
document.webkitExitFullscreen();
} else if (document.msExitFullscreen) {
document.msExitFullscreen();
}
} else {
element = $('#fullscreen-wrapper').get(0);
if (element.requestFullscreen) {
element.requestFullscreen();
} else if (element.mozRequestFullScreen) {
element.mozRequestFullScreen();
} else if (element.webkitRequestFullscreen) {
element.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
} else if (element.msRequestFullscreen) {
element.msRequestFullscreen();
}
}
});

Answer 1

切换到全屏时，将当前滚动位置保存在变量中。退出时，只需将窗口滚动到的位置

let lastScrollPosition;
$('#toggle_fullscreen').on('click', function(){
if (
document.fullscreenElement ||
document.webkitFullscreenElement ||
document.mozFullScreenElement ||
document.msFullscreenElement
) {
if (document.exitFullscreen) {
document.exitFullscreen();
} else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
} else if (document.webkitExitFullscreen) {
document.webkitExitFullscreen();
} else if (document.msExitFullscreen) {
document.msExitFullscreen();
}
$(window).scrollTop(lastScrollPosition);
} else {
element = $('#fullscreen-wrapper').get(0);
if (element.requestFullscreen) {
element.requestFullscreen();
} else if (element.mozRequestFullScreen) {
element.mozRequestFullScreen();
} else if (element.webkitRequestFullscreen) {
element.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
} else if (element.msRequestFullscreen) {
element.msRequestFullscreen();
}
lastScrollPosition = $(window).scrollTop();
}
});