如何为动画结束事件设置事件侦听器

Question

我不想设置超时，而是想为动画结束事件设置一个事件侦听器。

动画完成后将立即执行该功能，而不需要额外的计时器。

为此，我发现：https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/animationend_event

但我不知道这将如何写入我的代码中。https://jsfiddle.net/7yn9ofk8/

据我所知，我需要在主体中添加一个事件侦听器，并侦听animationend，在回调中运行我在setTimeout中运行的代码。

如何将其添加到代码中？

fadeOut发生在单击退出按钮之后，可以在单击播放svg之后看到。

我提供了一个可以查看fadeOut的片段。

CSS

.fadingOut:before,
.fadingOut .isOpen {
animation: fadingOut 1s;
}
@keyframes fadingOut {
0% {
opacity: 1;
}
100% {
opacity: 0;
}
}

Javascript

function resetPage() {
document.querySelector("body").classList.add("fadingOut");
setTimeout(function() {
document.querySelector("body").classList.remove("fadingOut");
resetBackground("body");
resetCurtains(".with-curtain");
showAllButtons(".container.hide");
resetButtons(".outer");
}, 1000);
}

const manageUI = (function makeManageUI() {
function resetBackground(backgroundSelector) {
const allBackgrounds = document.querySelectorAll(backgroundSelector);
function showBackground(background) {
background.classList.remove("bg1");
}
allBackgrounds.forEach(showBackground);
}
function resetCurtains(curtainSelector) {
const allCurtains = document.querySelectorAll(curtainSelector);
function showCurtain(curtain) {
curtain.classList.remove("active");
}
allCurtains.forEach(showCurtain);
}
function showAllButtons(buttonSelector) {
const allButtons = document.querySelectorAll(buttonSelector);
function showButton(button) {
button.classList.remove("hide");
}
allButtons.forEach(showButton);
}
function resetButtons(buttonSelector) {
const allButtons = document.querySelectorAll(buttonSelector);
function showButton(button) {
button.classList.remove("isOpen");
}
allButtons.forEach(showButton);
}
function resetPage() {
document.querySelector("body").classList.add("fadingOut");
setTimeout(function () {
document.querySelector("body").classList.remove("fadingOut");
resetBackground("body");
resetCurtains(".with-curtain");
showAllButtons(".container.hide");
resetButtons(".outer");
}, 1000);
}
function hideCurtains(exitButtons) {
const container = exitButtons.closest(".inner-container");
const curtains = container.querySelector(".sliding-panels");
curtains.classList.add("hide");
}
function exitClickHandler(evt) {
resetPage();
hideCurtains(evt.currentTarget);
}
function addClickToExit(exitButtons) {
exitButtons.forEach(function addExitButtonHandler(exitButtons) {
exitButtons.addEventListener("click", exitClickHandler);
});
}
function init() {
const exitButtons = document.querySelectorAll(".exit");
addClickToExit(exitButtons);
}
return {
init
};
}());
const manageCover = (function makeManageCover() {
const config = {};
function show(el) {
el.classList.remove("hide");
}
function hide(el) {
el.classList.add("hide");
}
function hideAll(elements) {
elements.forEach(hide);
}
function resetBackground(backgroundSelector) {
const allBackgrounds = document.querySelectorAll(backgroundSelector);
function hideBackground(background) {
background.classList.add("bg1");
}
allBackgrounds.forEach(hideBackground);
}
function resetButtons(buttonSelector) {
const allButtons = document.querySelectorAll(buttonSelector);
function hideButton(button) {
button.classList.add("isOpen");
}
allButtons.forEach(hideButton);
}
function resetPage() {
resetBackground("body");
resetButtons(".outer");
}
function markAsPlayed(played) {
played.classList.add("played");
}
function showCovers(playButton) {
const cover = playButton.parentElement;
cover.classList.add("active");
show(cover);
}
function coverClickHandler(evt) {
hideAll(config.containers);
resetPage();
markAsPlayed(evt.currentTarget);
const cover = evt.currentTarget;
showCovers(cover);
}
function addClickToButtons(playButtons) {
playButtons.forEach(function playButtonHandler(playButton) {
playButton.addEventListener("click", coverClickHandler);
});
}
function addCoverHandler(coverSelector, handler) {
const cover = document.querySelector(coverSelector);
cover.addEventListener("click", handler);
}
function init(selectors) {
config.containers = document.querySelectorAll(selectors.container);
const playButtons = document.querySelectorAll(selectors.playButton);
addClickToButtons(playButtons);
}
return {
addCoverHandler,
init
};
}());
const videoPlayer = (function makeVideoPlayer() {
const tag = document.createElement("script");
tag.src = "https://www.youtube.com/player_api";
const firstScriptTag = document.getElementsByTagName("script")[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
function createResetHandler(player) {
const resetVideo = document.querySelectorAll(".exit");
resetVideo.forEach(function resetVideoHandler(video) {
video.addEventListener("click", function resetVideoHandler() {
player.destroy();
});
})
}
function onPlayerReady(event) {
const player = event.target;
player.setVolume(100);
createResetHandler(player);
}
function onPlayerStateChange(event) {
const player = event.target;
return player;
}
function addPlayer(video, playerOptions) {
playerOptions.videoId = playerOptions.videoId || video.dataset.id;
playerOptions.events = playerOptions.events || {};
playerOptions.events.onReady = onPlayerReady;
playerOptions.events.onStateChange = onPlayerStateChange;
const player = new YT.Player(video, playerOptions);
return player;
}
return {
addPlayer
};
}());
const managePlayer = (function makeManagePlayer() {
const playerVars = {
autoplay: 1,
controls: 1,
disablekb: 1,
enablejsapi: 1,
fs: 0,
iv_load_policy: 3
};
const defaults = {
height: 360,
host: "https://www.youtube-nocookie.com",
playerVars,
width: 640
};
function show(el) {
el.classList.remove("hide");
}
function combinePlayerOptions(opts1 = {}, opts2 = {}) {
const combined = Object.assign({}, opts1, opts2);
Object.keys(opts1).forEach(function checkObjects(prop) {
if (typeof opts1[prop] === "object") {
combined[prop] = Object.assign({}, opts1[prop], opts2[prop]);
}
});
return combined;
}
function createPlayer(videoWrapper, playerOptions = {}) {
const video = videoWrapper.querySelector(".video");
const options = combinePlayerOptions(defaults, playerOptions);
return videoPlayer.addPlayer(video, options);
}
function createCallback(wrapper, playerOptions) {
return function callback() {
initPlayer(wrapper, playerOptions);
};
}
function playerAdder(parent, playerOptions) {
const wrapper = parent.querySelector(".wrap");
return function callback() {
initPlayer(wrapper, playerOptions);
};
}
function initPlayer(wrapper, playerOptions) {
show(wrapper);
const player = createPlayer(wrapper, playerOptions);
wrapper.player = player;
}
return {
adder: playerAdder,
createCallback
};
}());
function onYouTubeIframeAPIReady() {
function addPlayer(coverSelector, playerOptions) {
const parent = document.querySelector(coverSelector).parentElement;
const callback = managePlayer.adder(parent, playerOptions);
manageCover.addCoverHandler(coverSelector, callback);
}
addPlayer(".playa", {});
addPlayer(".playb", {});
addPlayer(".playc", {});
addPlayer(".playd", {});
addPlayer(".playe", {
playerVars: {
playlist: "0dgNc5S8cLI,mnfmQe8Mv1g,-Xgi_way56U,CHahce95B1g"
}
});
addPlayer(".playf", {});
addPlayer(".playg", {});
addPlayer(".playh", {});
addPlayer(".playi", {});
manageCover.init({
container: ".container",
playButton: ".thePlay"
});
manageUI.init({});
}

.play1  {
--color-a: blue;
--color-b: black;
--color-c: red;
--color-d: black;
}
.play2 {
--color-a: purple;
--color-b: black;
--color-c: purple;
--color-d: black;
}
.play3 {
--color-a: green;
--color-b: black;
--color-c: green;
--color-d: black;
}
.play4 {
--color-a: orange;
--color-b: black;
--color-c: orange;
--color-d: black;
}
.play5 {
--color-a: yellow;
--color-b: black;
--color-c: yellow;
--color-d: black;
}
.play6 {
--color-a: blue;
--color-b: black;
--color-c: orange;
--color-d: black;
}
.play7 {
--color-a: red;
--color-b: black;
--color-c: green;
--color-d: black;
}
.play8 {
--color-a: white;
--color-b: black;
--color-c: white;
--color-d: black;
}
.play9 {
--color-a: red;
--color-b: black;
--color-c: red;
--color-d: black;
}
html,
body {
height: 100%;
margin: 0;
padding: 0;
}
body {
background: #353198;
animation: fade 2s ease 0s forwards;
}

@keyframes fade {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
.fadingOut:before,
.fadingOut .isOpen {
animation: fadingOut 1s;
}
@keyframes fadingOut {
0% {
opacity: 1;
}
100% {
opacity: 0;
}
}
.outer {
display: flex;
flex-wrap: wrap;
min-height: 100%;
width: 290px;
box-sizing: border-box;
justify-content: center;
align-content: center;
margin: auto;
gap: 10px;
}
.outer.isOpen {
display: flex;
width: auto;
align-content: stretch;
}
.container {
display: flex;
justify-content: center;
position: relative;
/*z-index: 2;*/
}
.container.active {
flex: 1 0 0;
}
body.bg1 {
animation: fadebody 5s ease 0s forwards;
}
body.bg1 .with-curtain:before{
content: "";
position: fixed;
/*z-index: 1;*/
top: 0;
left: 0;
right: 0;
bottom: 0;
background-size: 165px 165px;
background-image:
linear-gradient(var(--color-a) 5px, #0000 5px),
linear-gradient(90deg, var(--color-a) 5px, #0000 5px),
linear-gradient(var(--color-b) 10px, #0000 10px 160px, var(--color-b) 160px),
linear-gradient(90deg, var(--color-b) 10px, #0000 10px 160px, var(--color-b) 160px),
linear-gradient(var(--color-c) 15px, #0000 15px 155px, var(--color-c) 155px),
linear-gradient(90deg, var(--color-c) 15px, #0000 15px 155px, var(--color-c) 155px),
linear-gradient(var(--color-d) 20px, #0000 20px 150px, var(--color-d) 150px),
linear-gradient(90deg, var(--color-d) 20px, #0000 20px 150px, var(--color-d) 150px),
linear-gradient(var(--color-a) 25px, #0000 25px 145px, var(--color-a) 145px),
linear-gradient(90deg, var(--color-a) 25px, #0000 25px 145px, var(--color-a) 145px),
linear-gradient(var(--color-b) 30px, #0000 30px 140px, var(--color-b) 140px),
linear-gradient(90deg, var(--color-b) 30px, #0000 30px 140px, var(--color-b) 140px),
linear-gradient(var(--color-c) 35px, #0000 35px 135px, var(--color-c) 135px),
linear-gradient(90deg, var(--color-c) 35px, #0000 35px 135px, var(--color-c) 135px),
linear-gradient(var(--color-d) 40px, #0000 40px 130px, var(--color-d) 130px),
linear-gradient(90deg, var(--color-d) 40px, #0000 40px 130px, var(--color-d) 130px),
linear-gradient(var(--color-a) 45px, #0000 45px 125px, var(--color-a) 125px),
linear-gradient(90deg, var(--color-a) 45px, #0000 45px 125px, var(--color-a) 125px),
linear-gradient(var(--color-b) 50px, #0000 50px 120px, var(--color-b) 120px),
linear-gradient(90deg, var(--color-b) 50px, #0000 50px 120px, var(--color-b) 120px),
linear-gradient(var(--color-c) 55px, #0000 55px 115px, var(--color-c) 115px),
linear-gradient(90deg, var(--color-c) 55px, #0000 55px 115px, var(--color-c) 115px),
linear-gradient(var(--color-d) 60px, #0000 60px 110px, var(--color-d) 110px),
linear-gradient(90deg, var(--color-d) 60px, #0000 60px 110px, var(--color-d) 110px),
linear-gradient(var(--color-a) 65px, #0000 65px 105px, var(--color-a) 105px),
linear-gradient(90deg, var(--color-a) 65px, #0000 65px 105px, var(--color-a) 105px),
linear-gradient(var(--color-b) 70px, #0000 70px 100px, var(--color-b) 100px),
linear-gradient(90deg, var(--color-b)70px, #0000 70px 100px, var(--color-b) 100px),
linear-gradient(var(--color-c) 75px, #0000 75px 95px, var(--color-c) 95px),
linear-gradient(90deg, var(--color-c) 75px, #0000 75px 95px, var(--color-c) 95px),
linear-gradient(var(--color-d) 80px, #0000 80px 90px, var(--color-d) 90px),
linear-gradient(90deg, var(--color-d) 80px, #0000 80px 90px, var(--color-d) 90px),
linear-gradient(var(--color-a), var(--color-a));
}
.thePlay:hover {
box-shadow: 0 0 0 5px rgba(43, 179, 20, 0.5);
}
.thePlay:focus {
outline: 0;
box-shadow: 0 0 0 5px rgba(0, 255, 255, 0.5);
}
.inner-container {
display: none;
}
/* when container is active hide the svg and show the inner container*/
.container.active .thePlay {
display: none;
}
.container.active .inner-container {
display: flex;
}
.container.active .inner-container.curtain {
display: block;
}
@keyframes fadebody {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
.thePlay {
width: 90px;
height: 90px;
border-radius: 50%;
cursor: pointer;
border: none;
fill: blue;
background: transparent;
padding: 0;
filter: drop-shadow(3px 3px 3px rgba(0, 0, 0, 0.7));
}
.played {
fill: green;
}

button.thePlay {
pointer-events: none;
}
.exit {
position: absolute;
top: auto;
bottom: -47.63px;
margin: auto;
right: 0;
left: 0;
width: 47.63px;
height: 47.63px;
cursor: pointer;
border: none;
background: transparent;
fill: red;
padding: 0;
}
.exitsvg {
fill: none;
fill-rule: evenodd;
stroke: #ff0000;
stroke-width: 17.80202103;
stroke-linecap: butt;
stroke-linejoin: miter;
stroke-miterlimit: 4;
stroke-dasharray: none;
stroke-opacity: 1;
border: 4.625px solid #4e4e4e;
border-radius: 100%;
}
.curtain {
position: relative;
max-width: 642px;
margin: auto;
flex: 1 0 0%;
background: #0a0a0a;
border: 20px solid #000;
border-radius: 3.2px;
border-color: #000 #101010 #000 #101010;
}
.panel-left,
.panel-right {
position: absolute;
height: 100%;
width: calc(50% + 1px);
/* rounding error fix */
top: 0%;
transition: all ease 10s;
/*background-image: url("https://picsum.photos/600");
background-size: cover;
background-repeat: no-repeat;
background-position: center;*/
overflow: hidden;
}
.panel-left {
left: 0;
/*background-color: rgb(91, 96, 106);*/
}
.panel-right {
right: 0;
/*background-color: rgb(229, 211, 211);*/
}
.panel-left::before,
.panel-right::before {
content: "";
position: absolute;
height: 100%;
width: 200%;
top: 0;
left: 0;
background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'> <filter id='filter'> <feTurbulence baseFrequency='0.01 0.0001' numOctaves='5'/> <feColorMatrix values='1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1'/></filter> <rect width='100%' height='100%' filter='url(%23filter)'/> </svg>");
background-size: auto;
background-repeat: no-repeat;
background-position: 0 0;
}
.panel-right::before {
left: -100%;
}
.container.active .curtain .panel-left {
animation: curtain1 8s forwards;
animation-delay: 1s;
}
@keyframes curtain1 {
to {
transform: translateX(-100%);
}
}
.container.active .curtain .panel-right {
animation: curtain2 8s forwards;
animation-delay: 1s;
}
@keyframes curtain2 {
to {
transform: translateX(100%);
}
}
.container.active .curtain .panel-right {
animation: curtain3 8s forwards;
animation-delay: 1s;
}
@keyframes curtain3 {
to {
transform: translateX(100%);
}
}
.container.active .curtain .panel-right {
animation: curtain4 8s forwards;
animation-delay: 1s;
}
@keyframes curtain4 {
to {
transform: translateX(100%);
}
}

.container.active .curtain .panel-right {
animation: curtain5 8s forwards;
animation-delay: 1s;
}
@keyframes curtain5 {
to {
transform: translateX(100%);
}
}
.container.active .curtain .panel-right {
animation: curtain6 8s forwards;
animation-delay: 1s;
}
@keyframes curtain6 {
to {
transform: translateX(100%);
}
}
.container.active .curtain .panel-right {
animation: curtain7 8s forwards;
animation-delay: 1s;
}
@keyframes curtain7 {
to {
transform: translateX(100%);
}
}
.container.active .curtain .panel-right {
animation: curtain8 8s forwards;
animation-delay: 1s;
}
@keyframes curtain8 {
to {
transform: translateX(100%);
}
}
.container.active .curtain .panel-right {
animation: curtain9 8s forwards;
animation-delay: 1s;
}
@keyframes curtain9 {
to {
transform: translateX(100%);
}
}

.ratio-keeper {
position: relative;
height: 0;
padding-top: 56.25%;
margin: auto;
overflow: hidden;
border: 1px solid #333;
}
.video-frame {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
.hide {
display: none;
}

<div class="outer">
<div class="container play1 with-curtain">
<button class="playa thePlay" type="button" aria-label="Open">
<svg width="100%" height="100%" viewBox="0 0 64 64">
<g id="play">
<title>Play</title>
<circle cx="32" cy="32" r="32" fill="transparent" pointer-events="visiblePainted" />
<path d="M25.6,46.4L44.8,32L25.6,17.6V46.4z M32,0C14.3,0,0,14.3,0,32s14.3,32,32,32s32-14.3,32-32S49.7,0,32,0z
M32,57.6C17.9,57.6,6.4,46.1,6.4,32S17.9,6.4,32,6.4S57.6,17.9,57.6,32S46.1,57.6,32,57.6z" />
</g>
</svg>
</button>
<div class="inner-container curtain curtain1">
<div class="ratio-keeper">
<div class="wrap">
<div class="video video-frame" data-id="CHahce95B1g"></div>
</div>
<div class="sliding-panels">
<div class="panel-left"></div>
<div class="panel-right"></div>
</div>
</div>
<button class="exit" type="button" aria-label="Close">
<svg class="exitsvg" width="38.39" height="38.39" viewBox="0 0 100 100">
<g id="exit">
<title>exit</title>
<path d="M 6.3895625,6.4195626 C 93.580437,93.610437 93.580437,93.610437 93.580437,93.610437" />
<path d="M 6.3894001,93.6106 C 93.830213,6.4194003 93.830213,6.4194003 93.830213,6.4194003" />
</g>
</svg>
</button>
</div>
</div>
<div class="container play2 with-curtain">
<button class="playb thePlay" type="button" aria-label="Open">
<svg width="100%" height="100%" viewBox="0 0 64 64">
<use href="#play" />
</svg>
</button>
<div class="inner-container curtain curtain2">
<div class="ratio-keeper">
<div class="wrap">
<div class="video video-frame" data-id="-Xgi_way56U"></div>
</div>
<div class="sliding-panels">
<div class="panel-left"></div>
<div class="panel-right"></div>
</div>
</div>
<button class="exit" type="button" aria-label="Close">
<svg class="exitsvg" width="38.39" height="38.39" viewBox="0 0 100 100">
<use href="#exit" />
</svg>
</button>
</div>
</div>
<div class="container play3 with-curtain">
<button class="playc thePlay" type="button" aria-label="Open">
<svg width="100%" height="100%" viewBox="0 0 64 64">
<use href="#play" />
</svg>
</button>
<div class="inner-container curtain curtain3">
<div class="ratio-keeper">
<div class="wrap">
<div class="video video-frame" data-id="-Xgi_way56U"></div>
</div>
<div class="sliding-panels">
<div class="panel-left"></div>
<div class="panel-right"></div>
</div>
</div>
<button class="exit" type="button" aria-label="Close">
<svg class="exitsvg" width="38.39" height="38.39" viewBox="0 0 100 100">
<use href="#exit" />
</svg>
</button>
</div>
</div>
<div class="container play4 with-curtain">
<button class="playd thePlay" type="button" aria-label="Open">
<svg width="100%" height="100%" viewBox="0 0 64 64">
<use href="#play" />
</svg>
</button>
<div class="inner-container curtain curtain4">
<div class="ratio-keeper">
<div class="wrap">
<div class="video video-frame" data-id="-Xgi_way56U"></div>
</div>
<div class="sliding-panels">
<div class="panel-left"></div>
<div class="panel-right"></div>
</div>
</div>
<button class="exit" type="button" aria-label="Close">
<svg class="exitsvg" width="38.39" height="38.39" viewBox="0 0 100 100">
<use href="#exit" />
</svg>
</button>
</div>
</div>
<div class="container play5 with-curtain">
<button class="playe thePlay" type="button" aria-label="Open">
<svg width="100%" height="100%" viewBox="0 0 64 64">
<use href="#play" />
</svg>
</button>
<div class="inner-container curtain curtain5">
<div class="ratio-keeper">
<div class="wrap">
<div class="video video-frame"></div>
</div>
<div class="sliding-panels">
<div class="panel-left"></div>
<div class="panel-right"></div>
</div>
</div>
<button class="exit" type="button" aria-label="Close">
<svg class="exitsvg" width="38.39" height="38.39" viewBox="0 0 100 100">
<use href="#exit" />
</svg>
</button>
</div>
</div>
<div class="container play6 with-curtain">
<button class="playf thePlay" type="button" aria-label="Open">
<svg width="100%" height="100%" viewBox="0 0 64 64">
<use href="#play" />
</svg>
</button>
<div class="inner-container curtain curtain6">
<div class="ratio-keeper">
<div class="wrap">
<div class="video video-frame" data-id="-Xgi_way56U"></div>
</div>
<div class="sliding-panels">
<div class="panel-left"></div>
<div class="panel-right"></div>
</div>
</div>
<button class="exit" type="button" aria-label="Close">
<svg class="exitsvg" width="38.39" height="38.39" viewBox="0 0 100 100">
<use href="#exit" />
</svg>
</button>
</div>
</div>
<div class="container play7 with-curtain">
<button class="playg thePlay" type="button" aria-label="Open">
<svg width="100%" height="100%" viewBox="0 0 64 64">
<use href="#play" />
</svg>
</button>
<div class="inner-container curtain curtain7">
<div class="ratio-keeper">
<div class="wrap">
<div class="video video-frame" data-id="-Xgi_way56U"></div>
</div>
<div class="sliding-panels">
<div class="panel-left"></div>
<div class="panel-right"></div>
</div>
</div>
<button class="exit" type="button" aria-label="Close">
<svg class="exitsvg" width="38.39" height="38.39" viewBox="0 0 100 100">
<use href="#exit" />
</svg>
</button>
</div>
</div>
<div class="container play8 with-curtain">
<button class="playh thePlay" type="button" aria-label="Open">
<svg width="100%" height="100%" viewBox="0 0 64 64">
<use href="#play" />
</svg>
</button>
<div class="inner-container curtain curtain8">
<div class="ratio-keeper">
<div class="wrap">
<div class="video video-frame" data-id="-Xgi_way56U"></div>
</div>
<div class="sliding-panels">
<div class="panel-left"></div>
<div class="panel-right"></div>
</div>
</div>
<button class="exit" type="button" aria-label="Close">
<svg class="exitsvg" width="38.39" height="38.39" viewBox="0 0 100 100">
<use href="#exit" />
</svg>
</button>
</div>
</div>
<div class="container play9 with-curtain">
<button class="playi thePlay" type="button" aria-label="Open">
<svg width="100%" height="100%" viewBox="0 0 64 64">
<use href="#play" />
</svg>
</button>
<div class="inner-container curtain curtain9">
<div class="ratio-keeper">
<div class="wrap">
<div class="video video-frame" data-id="-Xgi_way56U"></div>
</div>
<div class="sliding-panels">
<div class="panel-left"></div>
<div class="panel-right"></div>
</div>
</div>
<button class="exit" type="button" aria-label="Close">
<svg class="exitsvg" width="38.39" height="38.39" viewBox="0 0 100 100">
<use href="#exit" />
</svg>
</button>
</div>
</div>
</div>

Answer 1

据我所知，我需要在主体中添加一个事件侦听器监听animationend，在回调中运行我正在运行的代码在CCD_ 4内部。

你一切都对。

您将需要使用另一个addEventListener()(就像您在其他地方使用的一样)。

实现如下所示：

function resetPage() {
document.body.classList.add("fadingOut");
document.body.addEventListener('animationend', function() {
document.body.classList.remove("fadingOut");
resetBackground("body");
resetCurtains(".with-curtain");
showAllButtons(".container.hide");
resetButtons(".outer");
});
}

N。B.您不需要document.querySelector('head')或document.querySelector('body')。相反，document.head和document.body是标准的。