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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/126.0.6478.153 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 126

Operating system: iOS 17.5

Device Platform: Mobile

Date tested: 2 years ago

Split

8.7M/s

Substring

7.4M/s

Regex 1

4.5M/s

Regex 2

231K/s

View exact numbers

Test name	Executions per second
✓ Split	8,741,930 Ops/sec
Substring	7,390,810 Ops/sec
Regex 1	4,477,299 Ops/sec
Regex 2	231,122 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);