Run results for: Trim leading and trailing slash (regex vs split filter)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser: Chrome 138

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

split + filter + join

4.5M/s

simple regex

3.8M/s

regex with no lookbehind

3.8M/s

View exact numbers

Script Preparation code:

var s = '//the//////quick/brown///////////fox/jumps/over//the/lazy/dog////';

Tests:

simple regex
s.replace(/\/{2,}/g, "/").replace(/(^\/+|\/+$)/g, "");
regex with no lookbehind
s.replace(/\/{2,}/g, "/").replace(/(^\/+|(?<!\/)\/+$)/g, "");
split + filter + join
s.split("/").filter(Boolean).join("/");