Run results for: render text/html vs. regex

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:136.0) Gecko/20100101 Firefox/136.0

Browser: Firefox 136

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

regex

837K/s

parse

16K/s

View exact numbers

Test name	Executions per second
✓ regex	836,509 Ops/sec
parse	16,112 Ops/sec

Script Preparation code:

const string = "foobar<a>Link1</a>foobar<a>Link2</a>foobar<a>Link3</a>foobar<a>Link4</a>foobar<a>Link5</a>"

Tests:

regex
string.replace(/<a>(.*?)<\/a>/g, (match, p1) => { return `<a href="/path/${p1.toLowerCase()}">${p1}</a>`; });
parse
const parser = new DOMParser(); const parsed = parser.parseFromString(string, 'text/html'); const parsedAnchors = parsed.querySelectorAll('a'); parsedAnchors.forEach((anchor) => { const content = anchor.innerHTML; anchor.setAttribute('href', `/path/${content.toLowerCase()}`); });