MeasureThat.net

Run results for: map and filter vs for

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/118.0
Firefox 118
Windows
Desktop
one year ago
Test name Executions per second
Map and Filter 462.7 Ops/sec
for loop 2130.8 Ops/sec
Script Preparation code:
AخA
 
var data = Array.from({length: 100000}, (_, i) => i);
Tests:

  • Map and Filter

    ​x
     
    const results = data
      .map((value) => value * 2)
      .filter((value) => value % 4 === 0);
    ​
    return results;

  • for loop

     
    const length = data.length;
    const results = [];
    for (let j = 0; j < length; j++) {
      const value = data[j];
      if (value % 2 === 0 && value % 4 === 0) {
        results.push(value * 2);
      }
    }
    ​
    ​
    return results;