21 lines
527 B
Markdown
21 lines
527 B
Markdown
### isPrimitive
|
|
|
|
Returns a boolean determining if the passed value is primitive or not.
|
|
|
|
Use `Array.prototype.includes()` on an array of type strings which are not primitive,
|
|
supplying the type using `typeof`.
|
|
Since `typeof null` evaluates to `'object'`, it needs to be directly compared.
|
|
|
|
```js
|
|
const isPrimitive = val => Object(val) !== val;
|
|
```
|
|
|
|
```js
|
|
isPrimitive(null); // true
|
|
isPrimitive(50); // true
|
|
isPrimitive('Hello!'); // true
|
|
isPrimitive(false); // true
|
|
isPrimitive(Symbol()); // true
|
|
isPrimitive([]); // false
|
|
```
|