37 lines
591 B
Markdown
37 lines
591 B
Markdown
---
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id: dv3u
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tags: []
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created: Friday, June 28, 2024
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---
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# Concise mapping of object subfileds in JS
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## Scenario
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You have an array of objects and you want to return the objects with only a
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subset of the fields.
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## Implementation
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Standard approach with a map:
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```js
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const arrayOfObjs = [
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{ id: 12, name: "Thomas" },
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{ id: 3, name: "Gerald" },
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];
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// We just want the `name` property
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const subset = arrayOfObjs.map((obj) => {
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name: obj.name;
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});
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```
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More concise approach with destructuring:
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```js
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const subset = arrayOfObjs.map(({ name }) => ({ name }));
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```
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## Related notes
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