我已经厌倦了几个解决方案,这是我得到的最接近的解决方案。 但我仍然不满意结果如何,因为当鼠标离开元素时,元素会恢复到原来的旋转状态。 这个想法是,如果你越过该元素,即使鼠标离开该元素,它也会触发动画。如果你将鼠标悬停在元素上,它会播放动画并保持在 0 度,一旦鼠标离开,另一个动画就会播放,并旋转回 -8 度。
const elements = document.getElementsByClassName('rotate_left');
for (let i = 0; i <= elements.length; i++) {
elements[i].addEventListener('animationend', function(e) {
elements[i].classList.remove('animated')
/*elements[i].classList.add('animatedback')*/
});
elements[i].addEventListener('mouseover', function(e) {
elements[i].classList.add('animated')
elements[i].classList.remove('animatedback')
});
}
.rotate_left {
-ms-transform: rotate(-8deg);
-webkit-transform: rotate(-8deg);
transform: rotate(-8deg);
transition-duration: 1s;
transition-delay: 0.25s;
}
.polaroid {
width: 280px;
height: 200px;
padding: 10px 15px 100px 15px;
border: 1px solid #BFBFBF;
border-radius: 2%;
background-color: white;
box-shadow: 10px 10px 5px #aaaaaa;
}
.polaroid:hover {
width: 280px;
height: 200px;
padding: 10px 15px -100px 15px;
border: 1px solid #BFBFBF;
border-radius: 2%;
background-color: white;
box-shadow: 10px 10px 5px #aaaaaa;
-ms-transform: rotate(0deg);
-webkit-transform: rotate(0deg);
transform: rotate(0deg);
transition-duration: 1s;
transition-delay: 0.25s;
}
@keyframes animationBegining {
from {
-ms-transform: rotate(-8deg);
/* IE 9 */
-webkit-transform: rotate(-8deg);
/* Safari */
transform: rotate(-8deg);
}
to {
-ms-transform: rotate(0deg);
/* IE 9 */
-webkit-transform: rotate(0deg);
/* Safari */
transform: rotate(0deg);
}
}
@keyframes animatedBack {
form {
-ms-transform: rotate(0deg);
/* IE 9 */
-webkit-transform: rotate(0deg);
/* Safari */
transform: rotate(0deg);
}
to {
-ms-transform: rotate(-8deg);
/* IE 9 */
-webkit-transform: rotate(-8deg);
/* Safari */
transform: rotate(-8deg);
}
}
.animatedback {
animation: animatedBack 2s;
}
.animated {
animation: animationBegining 2s;
}
<div id="modalWrepper1" class="polaroid rotate_left"> <p class="caption">Just a basic explanation of the picture.</p> </div>
非常感谢您的帮助。
一旦鼠标离开元素,就会有一个平滑的动画返回到原始旋转。
纯 CSS 解决方案(第二个动画需要预防)
你不需要 JS 也不需要任何花哨的类。
transform和transition-duration就可以了。让我们从 HTML 开始;这仍然是您的代码,但经过简化:
现在,主要部分:CSS。由于您的卡默认旋转 -8 度,因此我们添加了一条规则来实现:
.rotate_left { transform: rotate(-8deg); transition-duration: 1s; transition-delay: 0.25s; }如果将
. Polaroid悬停在其上,它会旋转回0度。这意味着我们可以使用伪类:hover:.polaroid:hover { transform: rotate(0deg); }一旦您将鼠标移离
.poloid,:hover规则就不再适用。这意味着它将在 1 秒内恢复到之前的规则,从鼠标离开 0.25 秒后开始。尝试一下:
.rotate_left { transform: rotate(-8deg); transition-duration: 1s; transition-delay: 0.25s; } .polaroid:hover { transform: rotate(0deg); } /* Demo only */ .polaroid { border: 1px solid #bfbfbf; border-radius: 2%; padding: 10px 15px; height: 200px; width: 280px; box-shadow: 10px 10px 5px #aaa; }防止第二个动画停止
为了防止恢复停止,需要一些 JS。
首先,我们声明一些常量:
const card = document.querySelector('.rotate_left'); const duration = 1000; // Duration of animation, in milliseconds. const delay = 250; // Delay before animation, in milliseconds. const keyframes = [ { transform: 'rotate(-8deg)' }, { transform: 'rotate(0deg)' }, ]; const options = { duration, delay, fill: 'forwards' };然后我们创建一个处理程序:
const handler = () => { // New mouse over & leave should not mess with current animation. if (card.classList.contains('rotating')) { return; } // Let ourselves know that an animation is playing. card.classList.add('rotating'); let animation; if (card.classList.contains('not_rotated')) { // Rotated to 0 degree, reverting. animation = card.animate([...keyframes].reverse(), options); } else { animation = card.animate(keyframes, options); } // Make sure we clean after ourselves after animation. animation.finished.then(() => { card.classList.remove('rotating'); card.classList.toggle('not_rotated'); }); };将其添加为
'mouseover'/'mouseleave'的事件处理程序,我们就完成了:card.addEventListener('mouseover', handler); card.addEventListener('mouseleave', handler);尝试一下:
const card = document.querySelector('.rotate_left'); const duration = 1000; // Duration of animation, in milliseconds. const delay = 250; // Delay before animation, in milliseconds. const keyframes = [ { transform: 'rotate(-8deg)' }, { transform: 'rotate(0deg)' }, ]; const options = { duration, delay, fill: 'forwards' }; const handler = () => { if (card.classList.contains('rotating')) { return; } card.classList.add('rotating'); let animation; if (card.classList.contains('not_rotated')) { animation = card.animate([...keyframes].reverse(), options); } else { animation = card.animate(keyframes, options); } animation.finished.then(() => { card.classList.remove('rotating'); card.classList.toggle('not_rotated'); }); }; card.addEventListener('mouseover', handler); card.addEventListener('mouseleave', handler);.rotate_left { transform: rotate(-8deg); } /* Demo only */ .polaroid { border: 1px solid #bfbfbf; border-radius: 2%; padding: 10px 15px; height: 200px; width: 280px; box-shadow: 10px 10px 5px #aaa; }