Run results for: null vs undefined iiffe

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

undefined case

3.3M/s

null case

2.8M/s

View exact numbers

Test name	Executions per second
✓ undefined case	3,295,165 Ops/sec
null case	2,750,196 Ops/sec

Tests:

null case
for (let i = 0; i < 1000; i++) { null; }
undefined case
(function(undefined) { for (let i = 0; i < 1000; i++) { undefined; } })()