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Run results for:
Performance Test: substring vs substr vs slice constant length
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<iframe src="https://measurethat.net/Embed?id=580400" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0
Browser:
Firefox 133
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
substr
897.7M/s
substring
875.2M/s
slice
763.8M/s
View exact numbers
Test name
Executions per second
✓
substr
897,680,768 Ops/sec
substring
875,171,968 Ops/sec
slice
763,834,624 Ops/sec
Script Preparation code:
var string = "I am the god of hellfire, and I bring you..."
Tests:
slice
var substring = string.slice(0, 1024);
substring
var substring = string.substring(0, 1024);
substr
var substring = string.substr(0, 1024);