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Run results for: if-else vs switch and variations

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0
Chrome 131
Windows
Desktop
2 months ago
Test name Executions per second
if-else-if-else 67078672.0 Ops/sec
switch-with-default-initialized 69576760.0 Ops/sec
switch-without-default 69345888.0 Ops/sec
Tests:

  • if-else-if-else

    ​x
     
    let errorKey = 'error_occured'
    const err = { status: 503 }
    ​
          if (err.status == 401) {
            errorKey = 'error_rrn_not_authorized'
          } else if (err.status == 400 || err.status == 404) {
            errorKey = 'error_rrn_no_match'
          } else if (err.status == 502 || err.status == 503) {
            errorKey = 'error_rrn_not_available'
          }

  • switch-with-default-initialized

     
    let errorKey = 'error_occured'
    const err = { status: 503 }
    ​
    switch (err.status) {
      case 401:
        errorKey = 'error_rrn_not_authorized'
        break
      case 400:
      case 404:
        errorKey = 'error_rrn_no_match'
        break
      case 502:
      case 503:
        errorKey = 'error_rrn_not_available'
        break
    }
    ​

  • switch-without-default

     
    let errorKey
    const err = { status: 503 }
    ​
    switch (err.status) {
      case 401:
        errorKey = 'error_rrn_not_authorized'
        break
      case 400:
      case 404:
        errorKey = 'error_rrn_no_match'
        break
      case 502:
      case 503:
        errorKey = 'error_rrn_not_available'
        break
      default:
        errorKey = 'error_occured'
    }
    ​