Run results for: Get last part from URL (Regex vs Split vs Substring)

Run details:

User agent: Mozilla/5.0 (iPad; CPU OS 17_7_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) EdgiOS/131.0.2903.92 Version/17.0 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.7.2

Device Platform: Tablet

Date tested: one year ago

Test name	Executions per second
Regex 1	265502112.0 Ops/sec
Regex 2	299503008.0 Ops/sec
Split	3602437.2 Ops/sec
Substring	19658652.0 Ops/sec

Script Preparation code:

var str = 'https://www.testsite.com/some-path/another-path/2019/my-amazing-page-name.html';

Tests:

Regex 1
str.replace(/^(.*[\\\/])/, '');
Regex 2
str.replace(/([^\/]+)(?=[^\/]*\/?$)/, '');
Split
str.split('/').pop();
Substring
str.substring(str.lastIndexOf('/')+1);

Run results for: Get last part from URL (Regex vs Split vs Substring)

Regex 1

Regex 2

Split

Substring