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=497858" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.0
Browser:
Firefox 121
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
2 years ago
character index
137.9M/s
charAt()
123.0M/s
slice()
117.3M/s
View exact numbers
Test name
Executions per second
✓
character index
137,932,272 Ops/sec
charAt()
123,022,640 Ops/sec
slice()
117,313,112 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();