Benchmark: Shift loop vs unrolled

Tests:

Shift loop
const arr = []; const ARRAY_SIZE = 5000; for (let i = 0; i < ARRAY_SIZE; i++) { arr.push(i); } while(arr.length) { let index = arr.shift(); index++; }
Unrolled Loop
let arr = []; const ARRAY_SIZE = 5000; for (let i = 0; i < ARRAY_SIZE; i++) { arr.push(i); } const arrSize = arr.length; for (let i = 0; i < arrSize; i++) { let index = arr[i]; index++; } arr = [];

Rendered benchmark preparation results:

Previous results

Test case name	Result
Shift loop
Unrolled Loop

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Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36

Browser/OS: Chrome 58 on Windows

Test name	Executions per second
Shift loop	649.4 Ops/sec
Unrolled Loop	2109.5 Ops/sec

Shift loop vs unrolled (version: 0)