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Run results for:
fromEvent vs addEventListener
fromEvent vs addEventListener
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=561767" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Browser:
Chrome 129
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
fromEvent
4K/s
addEventListener
2K/s
View exact numbers
Test name
Executions per second
✓
fromEvent
4,319 Ops/sec
addEventListener
1,651 Ops/sec
HTML Preparation code:
<script src='https://unpkg.com/rxjs@^7/dist/bundles/rxjs.umd.min.js'></script>
Tests:
fromEvent
let { fromEvent, throttleTime, map, scan } = rxjs; fromEvent(document, 'click') .pipe( throttleTime(1000), map((event) => event.clientX), scan((count, clientX) => count + clientX, 0) ) .subscribe((count) => console.log(count));
addEventListener
let count = 0; const rate = 1000; let lastClick = Date.now() - rate; document.addEventListener('click', (event) => { if (Date.now() - lastClick >= rate) { count += event.clientX; console.log(count); lastClick = Date.now(); } });