Run results for: Search Results Web results Performance of for loops with JavaScript

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36

Browser: Chrome 86

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

var posts = [];
for(let i = 0; i < 1000000; i++) {
  posts.push({
    upVotes: i,
  });
}

Tests:

reduce
let sum = 0; sum = posts.reduce((s, p) => s += p.upVotes, 0);
for loop
let sum = 0; for (let i = 0; i < posts.length; i++) { sum += posts[i].upVotes; }
for each
let sum = 0; posts.forEach(element => { sum += element.upVotes; });
for of
let sum = 0; for(const post of posts) { sum += post.upVotes; }