Run results for: Object.keys vs Object.values vs Object.entries creation

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Browser: Chrome 109

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Object keys	753.1 Ops/sec
Object entries	595.1 Ops/sec
Object values	449.7 Ops/sec

Script Preparation code:

var obj = new Object()
var keys = (new Array(10000)).fill(0).map((x, i) => { return i + 1 })
keys.forEach((x) => { obj['prop' + x] = x })

AخA
 
var obj = new Object()var keys = (new Array(10000)).fill(0).map((x, i) => { return i + 1 })keys.forEach((x) => { obj['prop' + x] = x })

Tests:

Object keys

const keys = Object.keys(obj);

for (let j1 = 0; j1 < keys.length; j1++) {
  
	const key = keys[ j1 ];
  	const value = obj[ key ];
  
	const result = key + value;
}

​x
 
const keys = Object.keys(obj);​for (let j1 = 0; j1 < keys.length; j1++) {      const key = keys[ j1 ];    const value = obj[ key ];      const result = key + value;}

Object entries

const entries = Object.entries(obj);

for (let j1 = 0; j1 < entries.length; j1++) {
  
	const entry = entries[ j1 ];
  
  	const key = entry[0];
  	const value = entry[1];
  
	const result = key + value;
}

 
const entries = Object.entries(obj);​for (let j1 = 0; j1 < entries.length; j1++) {      const entry = entries[ j1 ];      const key = entry[0];    const value = entry[1];      const result = key + value;}

Object values

const keys = Object.keys(obj);
const values = Object.values(obj);

for (let j1 = 0; j1 < keys.length; j1++) {
    
  	const key = keys[j1];
  	const value = values[j1];
  
	const result = key + value;
}

 
const keys = Object.keys(obj);const values = Object.values(obj);​for (let j1 = 0; j1 < keys.length; j1++) {        const key = keys[j1];    const value = values[j1];      const result = key + value;}