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30-seconds-of-code/snippets/isFunction.md
2017-12-28 08:30:19 +00:00

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### isFunction
Checks if the given argument is a function.
Use `typeof` to check if a value is classified as a function primitive.
```js
const isFunction = val => val && typeof val === 'function';
```
```js
isFunction('x'); // false
isFunction(x => x); // true
```