11 lines
379 B
Markdown
11 lines
379 B
Markdown
### Pick
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Use `Array.reduce()` to convert the filtered/picked keys back to a object with the corresponding key:value pair if the key exist in the obj.
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```js
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const pick = (obj, arr) =>
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arr.reduce((acc, curr) => (curr in obj && (acc[curr] = obj[curr]), acc), {});
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// pick({ 'a': 1, 'b': '2', 'c': 3 }, ['a', 'c']) -> { 'a': 1, 'c': 3 }
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// pick(object, ['a', 'c'])['a'] -> 1
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```
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