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Fastest array check (v3)

Revision 3 of this benchmark created by caitlin on March 3, 2016

Setup

var arr = [1];
    var notArr = {
      1: 1,
      length: 1,
      splice: function() {}
    };

Test runner

Ready to run.

Testing in
Test		Ops/sec
Classic tostring	`if (Object.prototype.toString.call(arr).search(/Array/i) >= 0) {}`	ready
Classic tostring array-like	`if (Object.prototype.toString.call(notArr).search(/Array/i) >= 0) {}`	ready
Modern isArray	`if (Array.isArray(arr)) {}`	ready
Modern isArray array-like	`if (Array.isArray(notArr)) {}`	ready
Property check	`if (arr.length && arr.splice) {}`	ready
Property check array-like	`if (notArr.length && notArr.splice) {}`	ready

Revisions

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

Revision 3: published by caitlin on March 3, 2016