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Run results for:
Array: Object.prototype.toString vs instanceof vs Array.isArray
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Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 18
Operating system:
iOS 18.4.1
Device Platform:
Mobile
Date tested:
one year ago
Test name
Executions per second
toString
84956104.0 Ops/sec
instanceof
370184256.0 Ops/sec
isArray
127403720.0 Ops/sec
Script Preparation code:
var {toString} = Object.prototype; var arr = [1, 2, 3, 4]; var c =0;
Tests:
toString
if(toString.call(arr) === '[object Array]') {c++}
instanceof
if(arr instanceof Array) {c++}
isArray
if(Array.isArray(arr)) {c++}