Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
isArray vs nullish coalesce + length check
(version: 1)
Array.isArray vs array.length > 0
Comparing performance of:
Array.isArray vs Check object.length
Created:
one year ago
by:
Guest
Go to the latest result
Script Preparation code:
function myIsArray(obj){ return (obj ?? []).length > 0; } var isArray = Array.isArray
Tests:
Array.isArray
isArray([])
Check object.length
myIsArray([])
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Array.isArray
Check object.length
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Safari/605.1.15
Browser/OS:
Safari 18 on Mac OS X 10.15.7
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=599987" width="100%" height="500px"></iframe>
Array.isArray
601.2M/s
Check object.length
132.7M/s
View exact numbers
Test name
Executions per second
✓
Array.isArray
601,194,432 Ops/sec
Check object.length
132,709,568 Ops/sec
Related benchmarks
isArray vs length
isArray vs length (with alpha)
!!array.length vs array.length > 0
array.length vs array.length > 0 2
Comments
Confirm delete:
Do you really want to delete benchmark?