Run results for: localStorage vs sessionStorage vs Reading a Hardcoded Array Speedtest

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:85.0) Gecko/20100101 Firefox/85.0

Browser: Firefox 85

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

localStorage.setItem('foo', 'bar')
sessionStorage.setItem('foo', 'bar')
var ARR = ['bar'];

AخA
 
localStorage.setItem('foo', 'bar')sessionStorage.setItem('foo', 'bar')var ARR = ['bar'];

Tests:

Control
var FOO = 'bar';
var FOO = 'bar';
localStorage
var FOO = localStorage.getItem('foo');
var FOO = localStorage.getItem('foo');
sessionStorage
var FOO = sessionStorage.getItem('foo');
var FOO = sessionStorage.getItem('foo');
Read Array
var FOO = ARR[Math.floor(Math.random() * ARR.length)]
var FOO = ARR[Math.floor(Math.random() * ARR.length)]