Run results for: RegEx.test vs. localStorage.getItem

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36

Browser: Chrome 149

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 months ago

Benchmark engine: Benchmark.js

regex.test

66.2M/s

localStorage.getItem

14.0M/s

View exact numbers

Test name	Executions per second
✓ regex.test	66,189,112 Ops/sec
localStorage.getItem	14,046,647 Ops/sec

Script Preparation code:

var string = "Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1";
var regex = /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini\/i/;
window.localStorage.setItem("is-mobile", true);

Tests:

localStorage.getItem
window.localStorage.getItem("is-mobile");
regex.test
regex.test(string);