Run results for: Object.entries vs Object.keys vs for...in

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Windows

Device Platform: Desktop

Date tested: one month ago

Script Preparation code:

var obj = {};

for (let i = 0; i < 100; i++) {
  obj[`k_${i}`] = i;
}

​x
 
var obj = {};​for (let i = 0; i < 100; i++) {  obj[`k_${i}`] = i;}

Tests:

Object.entries
for (const [k, v] of Object.entries(obj)) console.log(k, v);
for (const [k, v] of Object.entries(obj)) console.log(k, v);
Object.keys
for (const k of Object.keys(obj)) console.log(k, obj[k]);
for (const k of Object.keys(obj)) console.log(k, obj[k]);
for...in
for (const k in obj) console.log(k, obj[k]);
for (const k in obj) console.log(k, obj[k]);