Run results for: Test two string array if it has a matching lowercased string

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Array.prototype.includes()	672350.5 Ops/sec
RegExp.prototype.test()	288152.4 Ops/sec

Script Preparation code:

var arr1 = [
    "HOPES",
    "AND",
    "DREAMS",
    "WERE",
    "DASHED",
    "THAT",
    "DAY.",
    "IT",
    "SHOULD",
    "HAVE",
    "BEEN",
    "EXPECTED,",
    "BUT",
    "IT",
    "STILL",
    "CAME",
    "AS",
    "A",
    "SHOCK.",
    "THE",
    "WARNING",
    "SIGNS",
    "HAD",
    "BEEN",
    "IGNORED",
    "IN",
    "FAVOR",
    "OF",
    "THE",
    "POSSIBILITY,",
    "HOWEVER",
    "REMOTE,",
    "THAT",
    "IT",
    "COULD",
    "ACTUALLY",
    "HAPPEN.",
    "THAT",
    "POSSIBILITY",
    "HAD",
    "GROWN",
    "FROM",
    "HOPE",
    "TO",
    "AN",
    "UNDENIABLE",
    "BELIEF",
    "IT",
    "MUST",
    "BE",
    "DESTINY.",
    "THAT",
    "WAS",
    "UNTIL",
    "IT",
    "WASN'T",
    "AND",
    "THE",
    "HOPES",
    "AND",
    "DREAMS",
    "CAME",
    "CRASHING",
    "DOWN."
]

var arr2 = [
    "THERE",
    "ARE",
    "DIFFERENT",
    "TYPES",
    "OF",
    "SECRETS.",
    "SHE",
    "HAD",
    "HELD",
    "ONTO",
    "PLENTY",
    "OF",
    "THEM",
    "DURING",
    "HER",
    "LIFE,",
    "BUT",
    "THIS",
    "ONE",
    "WAS",
    "DIFFERENT.",
    "SHE",
    "FOUND",
    "HERSELF",
    "HOLDING",
    "ONTO",
    "THE",
    "WORST",
    "TYPE.",
    "IT",
    "WAS",
    "THE",
    "TYPE",
    "OF",
    "SECRET",
    "THAT",
    "COULD",
    "GNAW",
    "AWAY",
    "AT",
    "YOUR",
    "INSIDES",
    "IF",
    "YOU",
    "DIDN'T",
    "TELL",
    "SOMEONE",
    "ABOUT",
    "IT,",
    "BUT",
    "IT",
    "COULD",
    "END",
    "UP",
    "GETTING",
    "YOU",
    "KILLED",
    "IF",
    "YOU",
    "DID."
]

Tests:

Array.prototype.includes()
const lowerCasedArr1 = arr1.map(str => str.toLowerCase()); arr2.some(str => lowerCasedArr1.includes(str.toLowerCase()));
RegExp.prototype.test()
const arr1Regex = new RegExp(arr1.join("|"),'i') arr2.some(str => arr1Regex.test(str))

Run results for: Test two string array if it has a matching lowercased string

Array.prototype.includes()

RegExp.prototype.test()