Run results for: Substring vs replace

Run details:

User agent: Mozilla/5.0 (Android 10; Mobile; rv:81.0) Gecko/81.0 Firefox/81.0

Browser: Firefox Mobile 81

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Replaces	2803315.0 Ops/sec
IndexOf + substring	3463742.0 Ops/sec

Script Preparation code:

var string = "url(https://fiddle.jshell.net/_display/#custom-id)";
var url = "https://fiddle.jshell.net/_display/";
var result;

Tests:

Replaces
result = string.replace(url, '').replace('url(#', '').replace(')', '')
IndexOf + substring
result = string.substring(string.indexOf(url), string.indexOf(url) + url.length).substring(string.indexOf("url(#") + 5).replace(')', '')