Run results for: In-memory, localStorage and sessionStorage Speedtest

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5 Mobile/15E148 DuckDuckGo/7 Safari/605.1.15

Browser: Mobile Safari 16

Operating system: iOS 16.5.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Control	5689167.5 Ops/sec
localStorage	3287053.2 Ops/sec
sessionStorage	2121654.2 Ops/sec

Script Preparation code:

localStorage.setItem('foo', 'bar')
sessionStorage.setItem('foo', 'bar')
window.foo = 'bar';

Tests:

Control
var FOO = window.foo
localStorage
var FOO = localStorage.getItem('foo');
sessionStorage
var FOO = sessionStorage.getItem('foo');

Run results for: In-memory, localStorage and sessionStorage Speedtest

Control

localStorage

sessionStorage