现在专注于移动端开发项目，对于动画这个点是非常重要的，每当我遇到一个新的知识点，我就会和大家一起分享
animation-fill-mode :把物体动画地从一个地方移动到另一个地方，并让它停留在那里
定义和用法
animation-fill-mode 属性规定当动画不播放时（当动画完成时，或当动画有一个延迟未开始播放时），要应用到元素的样式。
默认情况下，CSS 动画在第一个关键帧播放完之前不会影响元素，在最后一个关键帧完成后停止影响元素。animation-fill-mode 属性可重写该行为。
| none |
| 否 |
| 否。 |
| CSS3 |
| object.style.animationFillMode="forwards" |
特别是对于JS控制这一块，还可以将其恢复到最后一个关键帧完成后停止影响的状态
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <style> div{ width: 100px; height: 100px; background: red; position: relative; animation:move 2s linear; } @keyframes move { from{ left:0;} to{ left:100px; } } </style></head><body> <div id="div"></div> <button>试一试</button> <script> window.onload = function(){ var div = document.getElementById("div") var btn = document.getElementsByTagName("button")[0] btn.onclick = function(){ div.style.animationFillMode = "forwards" } //把动画状态恢复到最后一帧的状态 } </script></body></html>
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