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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.3 Safari/605.1.15

Browser: Safari 14

Operating system: Mac OS X 10.15.6

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)]