Number is primitive

OSCC · JavaScript, Type · Oct 22, 2020

Checks 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

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