Run results for: Array isArray vs instanceof vs variable.constructor - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; RMX1992) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.83 Mobile Safari/537.36

Browser: Chrome Mobile 83

Operating system: Android

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
Instanceof	1133487.0 Ops/sec
isArray	985457.9 Ops/sec
variable.constructor	1099813.4 Ops/sec
variable.constructor name	1511150.8 Ops/sec

Script Preparation code:

var test = [1,2,3,4];
var c;

Tests:

Instanceof
if (test instanceof Array) { c++; }
isArray
if (Array.isArray(test)) { c++; }
variable.constructor
if (test.constructor === Array) { c++; }
variable.constructor name
if (test.constructor.name === 'Array') { c++; }

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