Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
isArray vs instanceof vs typeof
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=588927" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Browser:
Chrome 133
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
isArray
14.4M/s
typeof
14.4M/s
instanceof
14.2M/s
View exact numbers
Test name
Executions per second
✓
isArray
14,445,269 Ops/sec
typeof
14,435,221 Ops/sec
instanceof
14,234,846 Ops/sec
Script Preparation code:
var test = [1,2,3,4]; var c;
Tests:
typeof
if (typeof test === 'object') { c++; }
isArray
if (Array.isArray(test)) { c++; }
instanceof
if (test instanceof Array) { c++; }