16 lines
422 B
Markdown
16 lines
422 B
Markdown
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---
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title: Modify Array Data With Indexes
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localeTitle: 使用索引修改数组数据
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---
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## 使用索引修改数组数据
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访问数组的位置，并更改它，如下所示：
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```javascript
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var arr = [1, 2, 3, 4, 5];
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arr[0] = 6; // Now, the array is [6, 2, 3, 4, 5]
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arr[4] = 10 // Now, the array is [6, 2, 3, 4, 10]
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```
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这里重要的概念是数组是**可变的** 。这意味着它们可以轻松更改。
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