Benchmark: String compare case insensitive: Regex.test() Vs toLowerCase() Vs localeCompare()

Script Preparation code:

var value = "hello"
var variable = "heLLo";
var regExp = new RegExp(value,'i');

Tests:

Regex.test()
regExp.test(variable);
toLowerCase()
value===variable.toLowerCase()
localeCompare()
value.localeCompare( variable, undefined, { sensitivity: "base" })

Rendered benchmark preparation results:

Previous results

Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36 Edg/147.0.0.0

Browser/OS: Chrome 147 on Windows

Regex.test()

54.7M/s

toLowerCase()

52.7M/s

localeCompare()

182K/s

View exact numbers

String compare case insensitive: Regex.test() Vs toLowerCase() Vs localeCompare() (version: 5)