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Run results for:
localStorage vs sessionStorage vs Reading a Hardcoded Array Speedtest
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=606455" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Safari/605.1.15
Browser:
Safari 17
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
Control
526.7M/s
Read Array
212.9M/s
sessionStorage
11.7M/s
localStorage
11.0M/s
View exact numbers
Test name
Executions per second
✓
Control
526,717,280 Ops/sec
Read Array
212,898,400 Ops/sec
sessionStorage
11,708,035 Ops/sec
localStorage
11,042,308 Ops/sec
Script Preparation code:
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)]