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Run results for:
Array Slicing
Different ways of getting a slice of an array
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<iframe src="https://measurethat.net/Embed?id=498099" 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/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Array.slice
3.4M/s
Array[index] with known size
222K/s
Array[index] with unknown size
219K/s
Array.push
217K/s
View exact numbers
Test name
Executions per second
✓
Array.slice
3,370,281 Ops/sec
Array[index] with known size
221,831 Ops/sec
Array[index] with unknown size
218,936 Ops/sec
Array.push
217,008 Ops/sec
Tests:
Array.slice
const elements = document.all; const arr = Array.prototype.slice.call(elements, 100, 200);
Array.push
const elements = document.all; const amount = elements.length; const arr = []; for (let i = 100; i < 200; i++) arr.push(elements[i]);
Array[index] with known size
const elements = document.all; const arr = Array(100); for (let i = 100; i < 200; i++) arr[i - 100] = elements[i];
Array[index] with unknown size
const elements = document.all; const arr = []; for (let i = 100; i < 200; i++) arr[i - 100] = elements[i];