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Run results for:
array[array.length - 1] vs array.at(-1) vs array[array.length + -1]
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<iframe src="https://measurethat.net/Embed?id=561725" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Browser:
Chrome 129
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
array.at(-1)
23.4M/s
array[array.length - 1]
12.4M/s
array[array.length + -1]
12.3M/s
View exact numbers
Test name
Executions per second
✓
array.at(-1)
23,446,644 Ops/sec
array[array.length - 1]
12,378,267 Ops/sec
array[array.length + -1]
12,257,865 Ops/sec
Script Preparation code:
var array = [1,2,3];
Tests:
array[array.length - 1]
var d = array[array.length - 1];
array.at(-1)
var z = array.at(-1);
array[array.length + -1]
var e = array[array.length + -1]