Run results for: for/for in/forEach array sum

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser: Chrome 104

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Script Preparation code:

var array = new Array(10000);
for (let i = 0; i < array.length; i++) {
  array[i] = i;
}

​x
 
var array = new Array(10000);for (let i = 0; i < array.length; i++) {  array[i] = i;}​

Tests:

let sum = 0;
for (let i = 0; i < array.length; i++) {
  sum += array[i];
}

 
let sum = 0;for (let i = 0; i < array.length; i++) {  sum += array[i];}

let sum = 0;
for (let item in array) {
  sum += item;
}

 
let sum = 0;for (let item in array) {  sum += item;}