Reduce v Filter
Date tested:
one year ago
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36
Test name
Executions per second
Reduce
4312663.0 Ops/sec
Filter
3255371.0 Ops/sec
Benchmark definition (click to collapse):
Script Preparation code:
var voters = [ { name: "Bob", age: 30, voted: true }, { name: "Jake", age: 32, voted: true }, { name: "Kate", age: 25, voted: false }, { name: "Sam", age: 20, voted: false }, { name: "Phil", age: 21, voted: true }, { name: "Ed", age: 55, voted: true }, { name: "Tami", age: 54, voted: true }, { name: "Mary", age: 31, voted: false }, { name: "Becky", age: 43, voted: false }, { name: "Joey", age: 41, voted: true }, { name: "Jeff", age: 30, voted: true }, { name: "Zack", age: 19, voted: false } ];
Tests:
Reduce
voters.reduce((acc, voter) => { return voter.voted ? acc + 1 : acc; }, 0);
Filter
voters.filter(item => item.voted)
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