82 lines
1.8 KiB
Markdown
82 lines
1.8 KiB
Markdown
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---
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id: 587d78a8367417b2b2512ae3
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title: Animate Elements Continually Using an Infinite Animation Count
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challengeType: 0
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videoUrl: ''
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localeTitle: 动画元素不断使用无限动画计数
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---
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## Description
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<section id="description">之前的挑战涉及如何使用某些动画属性和<code>@keyframes</code>规则。另一个动画属性是<code>animation-iteration-count</code> ，它允许您控制循环动画的次数。这是一个例子： <code>animation-iteration-count: 3;</code>在这种情况下，动画将在运行3次后停止，但可以通过将该值设置为无限来使动画连续运行。 </section>
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## Instructions
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<section id="instructions">要使球在连续循环中保持在右侧弹跳，请将<code>animation-iteration-count</code>属性更改为无限。 </section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>animation-iteration-count</code>属性应具有无限值。
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testString: 'assert($("#ball").css("animation-iteration-count") == "infinite", "The <code>animation-iteration-count</code> property should have a value of infinite.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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```html
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<style>
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#ball {
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width: 100px;
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height: 100px;
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margin: 50px auto;
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position: relative;
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border-radius: 50%;
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background: linear-gradient(
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35deg,
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#ccffff,
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#ffcccc
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);
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animation-name: bounce;
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animation-duration: 1s;
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animation-iteration-count: 3;
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}
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@keyframes bounce{
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0% {
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top: 0px;
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}
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50% {
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top: 249px;
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width: 130px;
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height: 70px;
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}
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100% {
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top: 0px;
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}
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}
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</style>
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<div id="ball"></div>
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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