24 lines
631 B
Markdown
24 lines
631 B
Markdown
---
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title: Value is plain object
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tags: type,object
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expertise: intermediate
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cover: blog_images/yellow-white-mug-1.jpg
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firstSeen: 2018-01-19T13:59:12+02:00
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lastUpdated: 2020-10-20T23:02:01+03:00
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---
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Checks if the provided value is an object created by the Object constructor.
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- Check if the provided value is truthy.
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- Use `typeof` to check if it is an object and `Object.prototype.constructor` to make sure the constructor is equal to `Object`.
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```js
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const isPlainObject = val =>
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!!val && typeof val === 'object' && val.constructor === Object;
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```
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```js
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isPlainObject({ a: 1 }); // true
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isPlainObject(new Map()); // false
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```
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