Run results for: split.includes vs regex boundary

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser: Chrome 114

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
str.split.includes	7773167.5 Ops/sec
regex - create inline	3112663.0 Ops/sec
regex - create first	9836886.0 Ops/sec

Script Preparation code:

var str = "AB CD EF GH IJ KL";
var needle = "CD";
var regex = /\bCD\b/;
var escapeRegEx = (string) => string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')

Tests:

str.split.includes
str.split(' ').includes(needle);
regex - create inline
str.match(escapeRegEx(needle))
regex - create first
str.match(regex)

Run results for: split.includes vs regex boundary

str.split.includes

regex - create inline

regex - create first