Negated Array.isArray vs instanceof Array vs _.isArray (v13)

Revision 13 of this benchmark created on

Preparation HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.min.js"></script>

Setup

var a = [1, 2, 3];
    var s = 'example';
    var f = false;

Test runner

Ready to run.

Testing in
TestOps/sec
Array.isArray
!(Array.isArray(a))
ready
instanceof
!(a instanceof Array)
ready
_.isArray
!_.isArray(a)
ready
Array.isArray(boolean)
!Array.isArray(f)
ready
instanceof (boolean)
!(f instanceof Array)
ready
_.isArray(boolean)
!_.isArray(f)
ready
Array constructor !== Array
a.constructor !== Array
ready
boolean constructor !== Array
f.constructor !== Array
ready

Revisions

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