91 lines
1.8 KiB
Markdown
91 lines
1.8 KiB
Markdown
---
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id: 587d78ae367417b2b2512afc
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title: 使用 flex-grow 屬性定義 flex 子元素的增長係數
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challengeType: 0
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videoUrl: 'https://scrimba.com/p/pVaDAv/c2p78cg'
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forumTopicId: 301111
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dashedName: use-the-flex-grow-property-to-expand-items
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---
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# --description--
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與 `flex-shrink` 相對的是 `flex-grow`。 你應該還記得,`flex-shrink` 會在容器太小時對子元素作出調整。 相應地,`flex-grow` 會在容器太大時對子元素作出調整。
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例子與上一個挑戰相似,如果一個項目的 `flex-grow` 屬性值爲 `1`,另一個項目的 `flex-grow` 屬性值爲 `3`,那麼值爲 `3` 的一個會較另一個擴大 3 倍。
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# --instructions--
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請爲 `#box-1` 和 `#box-2` 添加 CSS 屬性 `flex-grow`。 將 `#box-1` 的屬性值設爲 `1`,`#box-2` 的屬性值設爲 `2`。
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# --hints--
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`#box-1` 元素應具有 `flex-grow` 屬性,其屬性值應爲 `1`。
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```js
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assert($('#box-1').css('flex-grow') == '1');
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```
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`#box-2` 元素應具有 `flex-grow` 屬性,其屬性值應爲 `2`。
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```js
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assert($('#box-2').css('flex-grow') == '2');
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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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#box-container {
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display: flex;
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height: 500px;
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}
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#box-1 {
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background-color: dodgerblue;
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height: 200px;
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}
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#box-2 {
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background-color: orangered;
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height: 200px;
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}
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</style>
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<div id="box-container">
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<div id="box-1"></div>
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<div id="box-2"></div>
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</div>
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```
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# --solutions--
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```html
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<style>
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#box-container {
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display: flex;
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height: 500px;
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}
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#box-1 {
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background-color: dodgerblue;
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height: 200px;
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flex-grow: 1;
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}
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#box-2 {
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background-color: orangered;
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height: 200px;
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flex-grow: 2;
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}
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</style>
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<div id="box-container">
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<div id="box-1"></div>
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<div id="box-2"></div>
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</div>
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```
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