MeasureThat.net

Run results for: string concatenation vs string array

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.167 YaBrowser/22.7.3.822 Yowser/2.5 Safari/537.36
Yandex Browser 22
Windows
Desktop
2 years ago
Test name Executions per second
String concatenation 342.3 Ops/sec
String array 759.2 Ops/sec
Script Preparation code:
AخA
 
var str = '';
var strArr = new Array(10000);
Tests:

  • String concatenation

     
    for (let i = 0; i < 10000; i++) {
      str += 'new string';
    }

  • String array

     
    for (let i = 0; i < 10000; i++) {
      strArr[i] = 'new string';
    }
    strArr.join();