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zhaozhiming
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fix: make line same
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content/docs/lists-and-keys.md

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@@ -52,7 +52,6 @@ ReactDOM.render(
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我们可以把前面的例子重构成一个组件。这个组件接收 `numbers` 数组作为参数,输出一个无序列表。
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```javascript{3-5,7,13}
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function NumberList(props) {
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const numbers = props.numbers;
@@ -109,6 +108,7 @@ const listItems = numbers.map((number) =>
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</li>
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);
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```
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一个元素的 key 最好是这个元素在列表中拥有的一个独一无二的字符串。通常,我们使用来自数据的 id 作为元素的 key:
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```js{2}

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