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Run results for:
string indexer or charAt
Is array access to a string faster than calling charAt?
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=612602" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.5 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 18
Operating system:
iOS 18.5
Device Platform:
Mobile
Date tested:
one year ago
Test name
Executions per second
array access
10323122.0 Ops/sec
charAt
8583499.0 Ops/sec
Script Preparation code:
s = 'abcdefghijklmnopqrstuvwxzy'
Tests:
array access
r = '' for (let i = 0, l = s.length; i < l; ++i) { r += s[i] }
charAt
r = '' for (let i = 0, l = s.length; i < l; ++i) { r += s.charAt(i) }