undefined vs. typeof vs. in vs. hasOwn (version: 1)

Object lookup performance

Comparing performance of: undefined vs typeof vs in vs hasOwn vs bool

Created: one year ago by: Guest
Go to the latest result
Script Preparation code:
Tests:
Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    undefined
    typeof
    in
    hasOwn
    bool

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: one year ago)
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Mobile Safari/537.36
Chrome Mobile 131 on Android
View result in a separate tab
typeof
40.4M/s
bool
39.2M/s
undefined
37.4M/s
in
35.6M/s
hasOwn
19.1M/s
View exact numbers
Test name Executions per second
✓ typeof 40,375,368 Ops/sec
bool 39,150,148 Ops/sec
undefined 37,448,980 Ops/sec
in 35,642,988 Ops/sec
hasOwn 19,054,142 Ops/sec

Related benchmarks