Benchmark: Check if character is not a lowercase letter

Script Preparation code:

function regex(key) {
  return /[^a-z]/.test(key);
}

const alpha = "abcdefghijklmnopqrstuvwxyz";
function alphaIncludes(key) {
  return alpha.includes(key);
}

function charCodeBetween(key) {
  return key >= 97 && key <= 122
}

Tests:

regex
regex("s")
alphaIncludes
alphaIncludes("s")
charCodeBetween
charCodeBetween("s")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
regex
alphaIncludes
charCodeBetween

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Android 11; Mobile; rv:103.0) Gecko/103.0 Firefox/103.0

Browser/OS: Firefox Mobile 103 on Android

View result in a separate tab

Test name	Executions per second
regex	15863810.0 Ops/sec
alphaIncludes	21155020.0 Ops/sec
charCodeBetween	667592300.0 Ops/sec

Check if character is not a lowercase letter (version: 0)

regex test vs alphabet string includes vs charCodeAt

Comparing performance of: regex vs alphaIncludes vs charCodeBetween

Created: one year ago by: Guest

Jump to the latest result

regex

alphaIncludes

charCodeBetween

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A