Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
typeof undefined vs strict equal vs equal
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=490956" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
typeof
10.1M/s
equal null
9.9M/s
strict equal undefined
5.1M/s
View exact numbers
Test name
Executions per second
✓
typeof
10,090,368 Ops/sec
equal null
9,918,425 Ops/sec
strict equal undefined
5,100,945 Ops/sec
Tests:
typeof
var foo = undefined; typeof foo === "undefined";
strict equal undefined
var foo = undefined; foo === undefined
equal null
var foo = undefined; foo == null