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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=623649" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.2 Safari/605.1.15
Browser:
Safari 26
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
3 months ago
Test name
Executions per second
fromEvent
9705.0 Ops/sec
addEventListener
4188.8 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(); } });