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Run results for: startsWith vs substring vs indexOf

startsWith vs substring vs indexOf

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36
Chrome 96
Windows
Desktop
3 years ago
Test name Executions per second
startsWith 60213756.0 Ops/sec
substring 66706704.0 Ops/sec
indexOf 719735872.0 Ops/sec
Tests:

  • startsWith

    AخA
     
    let s_test = '0x101010';
    if (s_test.startsWith('0x')) s_test = s_test.slice(2);

  • substring

     
    let s_test = '0x101010';
    if (s_test.substring(0, 2) === "0x") s_test = s_test.slice(2);

  • indexOf

     
    let s_test = '0x101010';
    if (s_test.indexOf("0x") === 0) s_test = s_test.slice(2);