30-seconds-of-code/snippets/js/s/is-function.md

title, type, language, tags, cover, dateModified

title	type	language	tags	cover	dateModified
Value is function	snippet	javascript	type function	boulder-beach	2020-09-15T16:28:04+03:00

Checks if the given argument is a function.

• Use typeof to check if a value is classified as a function primitive.

const isFunction = val => typeof val === 'function';

isFunction('x'); // false
isFunction(x => x); // true