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Run results for:
Last item in array slice/0 vs length - 1 vs slice/pop vs slice/shift
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<iframe src="https://measurethat.net/Embed?id=487765" 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/119.0.0.0 Safari/537.36
Browser:
Chrome 119
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
slice/0
14K/s
slice/pop
14K/s
slice/shift
14K/s
length - 1
10K/s
View exact numbers
Test name
Executions per second
✓
slice/0
14,488 Ops/sec
slice/pop
14,010 Ops/sec
slice/shift
13,949 Ops/sec
length - 1
10,234 Ops/sec
Script Preparation code:
var arr = []; for (let i = 0; i < 1000000; i++) { arr.push(i); }
Tests:
slice/0
for (let i = 0; i < 1000; i++) { const v = arr.slice(-1)[0]; }
length - 1
for (let i = 0; i < 1000; i++) { const v = arr[arr.length - 1]; }
slice/pop
for (let i = 0; i < 1000; i++) { const v = arr.slice(-1).pop(); }
slice/shift
for (let i = 0; i < 1000; i++) { const v = arr.slice(-1).shift(); }