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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=578148" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Browser:
Chrome 131
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
length - 1
112K/s
slice/0
14K/s
slice/pop
14K/s
slice/shift
9K/s
View exact numbers
Test name
Executions per second
✓
length - 1
111,715 Ops/sec
slice/0
13,951 Ops/sec
slice/pop
13,883 Ops/sec
slice/shift
8,550 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(); }