27 lines
631 B
Markdown
27 lines
631 B
Markdown
---
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title: Number is primitive
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tags: type
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cover: flower-camera
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firstSeen: 2017-12-31T12:48:13+02:00
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lastUpdated: 2020-10-22T20:23:47+03:00
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---
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Checks if the passed value is primitive or not.
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- Create an object from `val` and compare it with `val` to determine if the passed value is primitive (i.e. not equal to the created object).
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```js
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const isPrimitive = val => Object(val) !== val;
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```
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```js
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isPrimitive(null); // true
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isPrimitive(undefined); // true
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isPrimitive(50); // true
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isPrimitive('Hello!'); // true
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isPrimitive(false); // true
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isPrimitive(Symbol()); // true
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isPrimitive([]); // false
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isPrimitive({}); // false
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```
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