21 lines
538 B
Markdown
21 lines
538 B
Markdown
---
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title: Convert array to identity object
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tags: array
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author: chalarangelo
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cover: rain-shopping
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firstSeen: 2023-04-16T05:00:00-04:00
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---
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Converts an array of values into an object with the same values as keys and values.
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- Use `Array.prototype.map()` to map each value to an array of key-value pairs.
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- Use `Object.fromEntries()` to convert the array of key-value pairs into an object.
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```js
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const toIdentityObject = arr => Object.fromEntries(arr.map(v => [v, v]));
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```
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```js
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toIdentityObject(['a', 'b']); // { a: 'a', b: 'b' }
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```
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