动画播放状态重置或恢复

Question

我正在研究带有动画的悬停按钮。这是代码：

HTML

<a href="" class="more-link"><span>Hover me &rarr;</span></a>

CSS

.more-link {
    display: inline-block;
    min-height: 2.4em;
    line-height: 2.4;
    color: #000;
    text-decoration: none;
    text-transform: uppercase;
    font-weight: bold;
    position: relative;
    min-width: 8em;
    text-align: center;
}

.more-link span {
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
    box-sizing: border-box;
    padding: 0 1em;
}

@keyframes tl {
    from {
        width: 0%;
    }
    to {
        width: 100%;
    }
}

@keyframes tr {
    from {
        height: 0%;
    }
    to {
        height: 100%;
    }
}

.more-link:before {
    content: ' ';
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 1px;
    background: #000;
    animation: tl 400ms ease-in both;
    animation-play-state: paused;
}

.more-link:hover:before {
    animation-play-state: running;
}

.more-link:after {
    content: ' ';
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    width: 1px;
    height: 0%;
    background: #000;
    animation: tr 400ms ease-in 400ms both;
    animation-play-state: paused;
}

.more-link:hover:after {
    animation-play-state: running;
}

.more-link span:before {
    content: ' ';
    display: block;
    position: absolute;
    bottom: 0;
    right: 0;
    width: 0%;
    height: 1px;
    background: #000;
    animation: tl 400ms ease-in 800ms both;
    animation-play-state: paused;
}

.more-link:hover span:before {
    animation-play-state: running;
}

.more-link span:after {
    content: ' ';
    display: block;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 1px;
    height: 0%;
    background: #000;
    animation: tr 400ms ease-in 1200ms both;
    animation-play-state: paused;
}

.more-link:hover span:after {
    animation-play-state: running;
}

如您所见，我已经在悬停按钮时设置了 animation-play-state: paused，但我真正需要的是悬停时的动画 "resume" 或 "reset" ，我在这里查看了一些文档 https://developer.mozilla.org/en-US/docs/Web/CSS/animation-play-state 但没有这个实现。我的案例有什么解决方法？

Answer 1

为什么 Javascript 不使用事件侦听器？

类似于：

(element).addEventListener("mouseover", function(){
(Add your animation name and info here that executes ONLY when hovered over.)
});

然后这样做：

(element).addEventListener("mouseout", function(){
(Add your animation name and info here that executes ONLY when the mouse leaves the div.)
});

动画播放状态重置或恢复

Animation-play-state Reset or Resume

css

animation

keyframe

css-animations