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isArray?

Benchmark created on October 31, 2025

Description

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray#instanceof_vs._array.isarray

Test runner

Ready to run.

Testing in
Test		Ops/sec
Array.isArray	`Array.isArray([])`	ready
instanceof	`[] instanceof Array`	ready
constructor	`[].constructor === Array`	ready
Object.getPrototypeOf	`Object.getPrototypeOf([]) === Array.prototype`	ready
Object.prototype.toString	`Object.prototype.toString.call([]) === "[object Array]"`	ready

Revisions

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

Revision 1: published on October 31, 2025