Array.includes vs Set.has

Benchmark created on September 4, 2024

Setup

const set = new Set();
const searchSet = new Set();
const chars = 'abcdefghijklmnopqrstuvwxyz0123456789';
const pickRandom = () => chars[Math.floor(Math.random() * chars.length)];

for (let i = 0; i < 50; i++) {
	set.add(pickRandom() + pickRandom());
	searchSet.add(pickRandom() + pickRandom()
);
}

const arr = [...set];
const search = [...searchSet];

console.log({
	search,
	arr,
	set
})

Test runner

search.filter(it => arr.includes(it))

search.filter(it => set.has(it))

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

• Revision 1: published on September 4, 2024