freeCodeCamp/guide/english/certifications/javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-to-assign-variables-from-arrays/index.md

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title: Use Destructuring Assignment to Assign Variables from Arrays
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# Use Destructuring Assignment to Assign Variables from Arrays


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## Hints

### Hint # 1
We have to take some precaution in this case.

1. No need of const [b,a] as it will keep the effect of assignment local.

2. const [b,a] = [a,b] will result in the value of a,b as undefined(simple assignment rule left to right).


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## Solutions

<details><summary>Solution 1 (Click to Show/Hide)</summary>

```javascript
let a = 8,
  b = 6;
[a, b] = [b, a];
```
</details>