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Run results for:
Array.prototype.with() vs Array.prototype.toSpliced() 2
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<iframe src="https://measurethat.net/Embed?id=558360" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Browser:
Chrome 129
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Splice
36K/s
ToSpliced
5K/s
With
5K/s
View exact numbers
Test name
Executions per second
✓
Splice
36,475 Ops/sec
ToSpliced
5,006 Ops/sec
With
4,839 Ops/sec
HTML Preparation code:
<div id="memory"> </div>
Tests:
With
const memBefore = window.performance.memory.usedJSHeapSize; const data = new Array(10000).fill(0); const formatter = Intl.NumberFormat('ru-RU'); const newData = data.with(123, "new value using With()"); const memDiff = window.performance.memory.usedJSHeapSize - memBefore; if(memDiff!==0){ console.log('WITH ',formatter.format(memDiff)); }
ToSpliced
const memBefore = window.performance.memory.usedJSHeapSize; const data = new Array(10000).fill(0); const formatter = Intl.NumberFormat('ru-RU'); const newData = data.toSpliced(123, 1, "new value using With()"); const memDiff = window.performance.memory.usedJSHeapSize - memBefore; if(memDiff!==0){ console.log('TSPL ',formatter.format(memDiff)); }
Splice
const memBefore = window.performance.memory.usedJSHeapSize; const data = new Array(10000).fill(0); const formatter = Intl.NumberFormat('ru-RU'); const newData = [...data].splice(123, 1, "new value using With()"); const memDiff = window.performance.memory.usedJSHeapSize - memBefore; if(memDiff!==0){ console.log('SPLI ',formatter.format(memDiff)); }