Run results for: Object iteration methods

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36

Browser: Chrome 75

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

var obj = {};

for(let i = 0; i < 30; ++i) {
	obj['*'+Math.random()] = Math.random();
}

Tests:

for
let x = 0; for(const key in obj) { if(!Object.prototype.hasOwnProperty.call(obj, key)) { continue; } x += obj[key]; }
Object.entries + for
let x = 0; const entries = Object.entries(obj); for(let i=0; i<entries.length; ++i) { x += entries[i][1]; }
Object.entries + forEach
let x = 0; Object.entries(obj).forEach((entry) => { x += entry[1]; });