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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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 OPR/114.0.0.0
Browser:
Opera 114
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
instanceof
1.8M/s
isArray
1.8M/s
toString
1.8M/s
View exact numbers
Test name
Executions per second
✓
instanceof
1,817,748 Ops/sec
isArray
1,803,116 Ops/sec
toString
1,780,000 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++}