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

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Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 15_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GSA/189.0.413529291 Mobile/15E148 Safari/604.1
Mobile Safari 15
iOS 15.1
Mobile
3 years ago
Test name Executions per second
Control 508178176.0 Ops/sec
localStorage 5606395.5 Ops/sec
sessionStorage 5576293.5 Ops/sec
Read Array 4154103.5 Ops/sec
Script Preparation code:
AخA
 
localStorage.setItem('foo', 'bar')
sessionStorage.setItem('foo', 'bar')
var ARR = ['bar'];
Tests:

  • Control

     
    var FOO = 'bar';

  • localStorage

     
    var FOO = localStorage.getItem('foo');

  • sessionStorage

     
    var FOO = sessionStorage.getItem('foo');

  • Read Array

     
    var FOO = ARR[Math.floor(Math.random() * ARR.length)]