How to check if an array is empty in JavaScript?

January 12, 2022

To check if an array is empty in JavaScript, do this: array.length === 0.

Here's how you do it:

const nonEmptyArray = [ 1, 2, 3 ];
const emptyArray = [];

console.log(nonEmptyArray.length === 0); // false
console.log(emptyArray.length === 0); // true