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Run results for:
forEach vs reduce
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 Edg/121.0.0.0
Browser:
Chrome 121
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
reduce spread
146K/s
forEach
104K/s
reduce
62K/s
View exact numbers
Test name
Executions per second
✓
reduce spread
145,906 Ops/sec
forEach
104,478 Ops/sec
reduce
61,626 Ops/sec
Script Preparation code:
var a = Array.from({length:100},()=>Math.random()); var b = [];
Tests:
forEach
a.forEach(e=>{if (e>0.5) b.push(e)});
reduce
b = a.reduce((a,c)=>c>0.5?a.concat(c):a,[])
reduce spread
b = a.reduce((a,c)=>c>0.5?[...a,c]:a,[])