Run results for: lodash assign vs lodash merge vs object.assign vs spread vs for loop

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36

Browser: Chrome 112

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Tests:

lodash merge
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = _.merge(a, b);
object.assign
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = Object.assign(a, b);
spread
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = { ...a, ...b };
lodash assign
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = _.assign(a, b);
Good old for loop
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; const merge = (objA, objB) => { const newObject = {}; for (const key in objA) { if (Object.prototype.hasOwnProperty.call(objA, key)) { newObject[key] = objA[key]; } } // eslint-disable-next-line no-restricted-syntax for (const key in objB) { if (Object.prototype.hasOwnProperty.call(objB, key)) { newObject[key] = objB[key]; } } return newObject; };