MeasureThat.net

Run results for: String concatenation vs array join 2

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:84.0) Gecko/20100101 Firefox/84.0
Firefox 84
Windows
Desktop
4 years ago
Test name Executions per second
string concatention 26420.3 Ops/sec
Array join 2901.4 Ops/sec
Array join with push 2786.9 Ops/sec
Tests:

  • string concatention

    AخA
     
    let str = "";
    const sArr = [];
    const limit = 10000;
    for (let i = 0; i < limit; i++) {
        str +=  "String concatenation. ";
    }

  • Array join

     
    let str = "";
    const sArr = [];
    const limit = 10000;
    for (let i = 0; i < limit; i++) {
        sArr[i] = "String concatenation. ";
    }
    str = sArr.join("");

  • Array join with push

     
    let str = "";
    const sArr = [];
    const limit = 10000;
    for (let i = 0; i < limit; i++) {
        sArr.push("String concatenation. ");
    }
    str = sArr.join("");