Run results for: javascript loops with reduce 4

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Browser: Chrome 128

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 8 months ago

Test name	Executions per second
foreach	3391.0 Ops/sec
for-in	3349.0 Ops/sec
for-of	3502.1 Ops/sec
for	3526.9 Ops/sec
optimized-for	3528.1 Ops/sec
reduce	3433.5 Ops/sec

Tests:

foreach

const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));
let index = 0;

items.forEach(i => index++);

​x
 
const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));let index = 0;​items.forEach(i => index++);

for-in

const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));
let index = 0;
const newArray = [];
for (let i in items) {
    newArray.push(i);
}

 
const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));let index = 0;const newArray = [];for (let i in items) {    newArray.push(i);}

for-of

const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));
let index = 0;
const newArray = [];
for (let i of items) {
    newArray.push(i);
}

 
const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));let index = 0;const newArray = [];for (let i of items) {    newArray.push(i);}

for

const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));
let index = 0;
const newArray = [];
for(let i = 0; i < items.length; ++i) {
  newArray.push(items[i]);
}

 
const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));let index = 0;const newArray = [];for(let i = 0; i < items.length; ++i) {  newArray.push(items[i]);}

optimized-for

const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));
let index = 0;
const newArray = [];
for(let i = items.length; i > 0; --i) {
  newArray.push(items[i]);
}

 
const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));let index = 0;const newArray = [];for(let i = items.length; i > 0; --i) {  newArray.push(items[i]);}

reduce

const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));

items.reduce((acc,value) => {
    acc.push(value);
    return acc;
}, new Array());

 
const items = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));​items.reduce((acc,value) => {    acc.push(value);    return acc;}, new Array());