30-seconds-of-code/snippets/isPrimitive.md

title, tags

title	tags
isPrimitive	type,function,array,string,intermediate

Returns a boolean determining if the passed value is primitive or not.

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).

const isPrimitive = val => Object(val) !== val;

isPrimitive(null); // true
isPrimitive(undefined); // true
isPrimitive(50); // true
isPrimitive('Hello!'); // true
isPrimitive(false); // true
isPrimitive(Symbol()); // true
isPrimitive([]); // false
isPrimitive({}); // false