93 lines
2.1 KiB
Markdown
93 lines
2.1 KiB
Markdown
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---
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id: 58a7a6ebf9a6318348e2d5aa
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title: 修改動畫的填充模式
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challengeType: 0
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videoUrl: 'https://scrimba.com/c/cVJDmcE'
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forumTopicId: 301064
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dashedName: modify-fill-mode-of-an-animation
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---
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# --description--
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太棒了，但是現在還不完美。 注意動畫在 `500ms` 之後重置了，所以按鈕又變成了之前的顏色。 而我們想要的效果是按鈕在懸停時始終高亮。
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爲此，我們可以通過把 `animation-fill-mode` 設置成 `forwards` 來實現。 `animation-fill-mode` 指定了在動畫結束時元素的樣式： 你可以這樣設置：
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```css
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animation-fill-mode: forwards;
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```
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# --instructions--
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設置 `button:hover` 的 `animation-fill-mode` 屬性爲 `forwards`，使用戶把鼠標懸停在按鈕上時，按鈕保持高亮。
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# --hints--
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`button:hover` 應有一個值爲 `forwards` 的 `animation-fill-mode` 屬性。
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```js
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assert(
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code.match(
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/button\s*?:\s*?hover\s*?{[\s\S]*animation-fill-mode\s*?:\s*?forwards\s*?;[\s\S]*}/gi
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) &&
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code.match(
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/button\s*?:\s*?hover\s*?{[\s\S]*animation-name\s*?:\s*?background-color\s*?;[\s\S]*}/gi
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) &&
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code.match(
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/button\s*?:\s*?hover\s*?{[\s\S]*animation-duration\s*?:\s*?500ms\s*?;[\s\S]*}/gi
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)
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);
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```
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# --seed--
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## --seed-contents--
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```html
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<style>
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button {
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border-radius: 5px;
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color: white;
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background-color: #0F5897;
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padding: 5px 10px 8px 10px;
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}
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button:hover {
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animation-name: background-color;
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animation-duration: 500ms;
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/* Only change code below this line */
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/* Only change code above this line */
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}
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@keyframes background-color {
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100% {
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background-color: #4791d0;
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}
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}
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</style>
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<button>Register</button>
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```
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# --solutions--
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```html
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<style>
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button {
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border-radius: 5px;
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color: white;
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background-color: #0F5897;
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padding: 5px 10px 8px 10px;
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}
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button:hover {
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animation-name: background-color;
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animation-duration: 500ms;
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animation-fill-mode: forwards;
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}
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@keyframes background-color {
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100% {
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background-color: #4791d0;
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}
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}
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</style>
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<button>Register</button>
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```
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