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Run results for:
Speed Test: substring vs substr vs slice
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<iframe src="https://measurethat.net/Embed?id=606418" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36
Browser:
Chrome 136
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
substr
270.5M/s
substring
263.1M/s
slice
166.5M/s
View exact numbers
Test name
Executions per second
✓
substr
270,519,008 Ops/sec
substring
263,076,304 Ops/sec
slice
166,527,088 Ops/sec
Script Preparation code:
var string = "I am the god of hellfire, and I bring you..."
Tests:
slice
var substring = string.slice(0, 25);
substring
var substring = string.substring(0, 25);
substr
var substring = string.substr(0, 25);