Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
char index vs charAt() vs slice()
Compare methods for testing string's beggining character.
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=580480" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36
Browser:
Chrome 132
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
character index
32.1M/s
slice()
28.1M/s
charAt()
28.0M/s
View exact numbers
Test name
Executions per second
✓
character index
32,142,802 Ops/sec
slice()
28,109,640 Ops/sec
charAt()
28,035,982 Ops/sec
Script Preparation code:
var str = 'foo bar baz'; var noop = Function.prototype;
Tests:
character index
if (str[0] == 'f') noop();
charAt()
if (str.charAt(0) == 'f') noop();
slice()
if (str.slice(0, 1) == 'f') noop();