17 lines
521 B
Markdown
17 lines
521 B
Markdown
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---
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title: Modify Array Data With Indexes
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---
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## Modify Array Data With Indexes
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<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds -->
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Access the position of the array, and change it, like so:
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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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The important concept here is that arrays are **mutable**. This means that they can be changed easily.
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