MeasureThat.net

Run results for: set.has vs. array.includes vs plain object (100 000)

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Chrome 133
Windows
Desktop
2 months ago
Test name Executions per second
Array.includes (best scenario) 114573856.0 Ops/sec
Set.has 184906848.0 Ops/sec
Object access 161323600.0 Ops/sec
Array.includes (middle scenario) 200957.1 Ops/sec
Array.includes (worst scenario) 99517.2 Ops/sec
Script Preparation code:
AخA
 
var length = 100000;
var a = Array.from({
    length
}, (e, i) => i+1);
var b = new Set(a);
var c = Object.fromEntries(a.map(e => [e, true]));
var best = 1;
var worst = length;
var middle = length / 2;
Tests:

  • Array.includes (best scenario)

     
    return a.includes(best)

  • Set.has

     
    return b.has(best)

  • Object access

     
    return c[best]

  • Array.includes (middle scenario)

     
    return a.includes(middle)

  • Array.includes (worst scenario)

     
    return a.includes(worst)