Benchmark: Custom Event vs Callback speed test

Tests:

Custom Event
let i = 1001; function cb() { console.log('hi') } document.addEventListener('custom:test', cb); while (--i) { window.dispatchEvent(new CustomEvent('custom:test')); }
Callback
function cb() { console.log('hi') } let i = 1001; while (--i) { cb(); }

Rendered benchmark preparation results:

Previous results

Test case name	Result
Custom Event
Callback

Latest run results:

Run details: (Test run date: 11 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36 Edg/136.0.0.0

Browser/OS: Chrome 136 on Windows

Test name	Executions per second
Custom Event	2990.5 Ops/sec
Callback	265.5 Ops/sec

Related benchmarks:

Custom Event vs Callback speed test (version: 1)