Run results for: SUM: reduce vs forof vs for

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.104 Safari/537.36

Browser: Chrome 88

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

var arr = [];
for (let j = 0; j < 1000000; j++) {
    arr.push(627326);
}

Tests:

Reduce
const r = arr.reduce( (p,c) => p+c, 0);
for of
let r = 0; for( const v of arr ) { r += v; }
for
let r = 0; for (let i=0; i < arr.length; i++) { r += arr[i]; }
for, length external
let r = 0, l = arr.length; for (let i=0; i < l; i++) { r += arr[i]; }