Exec vs manual finding

Benchmark created on

Setup

const s = "tagName.className.class2#id";

Test runner

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Testing in
TestOps/sec
Manual finding
let x = 0;
for (let i = 0; i < s.length; i++)
	if ("#.".includes(s[i]))
		x++;
ready
Exec
const regex = /[.#]/g;
let x = 0;
let match = regex.exec(s);
while (match !== null)
{
	x++;
	match = regex.exec(s);
}
ready
indexOf
let x = 0;

let indexOfId = s.indexOf("#");
let indexOfClass = s.indexOf(".");
let startIndex = indexOfClass === -1 || indexOfId !== -1 && indexOfId < indexOfClass ? indexOfId : indexOfClass;
while (startIndex !== -1)
{
	x++;
	indexOfId = s.indexOf("#", startIndex + 1);
	ndexOfClass = s.indexOf(".", startIndex + 1);
	startIndex = indexOfClass === -1 || indexOfId !== -1 && indexOfId < indexOfClass ? indexOfId : indexOfClass;
}
ready

Revisions

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