Benchmark: Dispatching events vs array manipulation

Script Preparation code:

window.a1 = []
window.a2 = []

window.target = new EventTarget()

Tests:

dispatch
for (let i=0; i<17; i++) { window.target.dispatchEvent(new CustomEvent("clickme")) }
array stuff
window.a1.push(123) window.a2.push(123, 123, 123, 123) window.a1.push(...a2.splice(1, 2))

Rendered benchmark preparation results:

Previous results

Test case name	Result
dispatch
array stuff

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Browser/OS: Chrome 99 on Mac OS X 10.15.7

Test name	Executions per second
dispatch	55278.2 Ops/sec
array stuff	4784.3 Ops/sec

Dispatching events vs array manipulation (version: 0)