1 回答

TA貢獻1818條經驗 獲得超7個贊
等待 transitionend 可能會導致更多的問題而不是它的價值。我不確定您的瀏覽器兼容性要求,但如果您可以使用動畫,我建議您使用它們:
let images = ['https://adiihd.github.io/rock-paper-scissors-game/img/rock.png', 'https://adiihd.github.io/rock-paper-scissors-game/img/paper.png', 'https://adiihd.github.io/rock-paper-scissors-game/img/scissors.png'];
const buttons = document.querySelectorAll('button');
// we use the .forEach method to iterate through each button
buttons.forEach((button) => {
// and for each one we add a 'click' listener
button.addEventListener('click', async (e) => {
let userImg = document.querySelector(".userimg");
userImg.classList.remove("userimg-animation");
// Force a reflow, see https://css-tricks.com/restart-css-animation/
userImg.offsetWidth;
userImg.classList.add("userimg-animation");
userImg.setAttribute("choice", button.id.toLowerCase());
});
});
.imageHolder {
position: relative;
display: inline-block;
}
.spacerimg {
opacity: 0;
}
.userimg-animation {
width: 100%;
height: 100%;
position: absolute;
animation-name: rockpaperscissors;
animation-duration: 1.2s;
}
.userimg {
background-repeat: no-repeat!important;
}
.userimg[choice="rock"] {
background: url(https://adiihd.github.io/rock-paper-scissors-game/img/rock.png);
}
.userimg[choice="paper"] {
background: url(https://adiihd.github.io/rock-paper-scissors-game/img/paper.png);
}
.userimg[choice="scissors"] {
background: url(https://adiihd.github.io/rock-paper-scissors-game/img/scissors.png);
}
@keyframes rockpaperscissors {
0% {
background: url(https://adiihd.github.io/rock-paper-scissors-game/img/rock.png);
}
33.2% {
background: url(https://adiihd.github.io/rock-paper-scissors-game/img/rock.png);
}
33.3% {
background: url(https://adiihd.github.io/rock-paper-scissors-game/img/paper.png);
}
66.5% {
background: url(https://adiihd.github.io/rock-paper-scissors-game/img/paper.png);
}
66.6% {
background: url(https://adiihd.github.io/rock-paper-scissors-game/img/scissors.png);
}
99.9% {
background: url(https://adiihd.github.io/rock-paper-scissors-game/img/scissors.png);
}
100% {
background: none;
}
}
<div class="imageHolder">
<div class="userimg"></div>
<img class="spacerimg" src="https://adiihd.github.io/rock-paper-scissors-game/img/rock.png">
</div>
<br>
<button id="Rock">Rock</button>
<button id="Paper">Paper</button>
<button id="Scissors">Scissors</button>
注意:我必須編寫額外的關鍵幀以防止背景之間的動畫(它們在彼此之間淡出)。但是您可能需要動畫,因此如果您刪除每個奇數關鍵幀,您將擁有更少的 CSS 并且它們將在彼此之間進行動畫處理。
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