Run results for: object merge

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.4

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

for

846K/s

assign

739K/s

spread

721K/s

View exact numbers

Tests:

spread
const obj1 = {a: 1, b: 2, c: 3}; const obj2 = {d: 4, e: 5, f: 6}; const obj3 = {...obj1, ...obj2}; console.log(obj3);
assign
const obj1 = {a: 1, b: 2, c: 3}; const obj2 = {d: 4, e: 5, f: 6}; Object.assign(obj1, obj2); console.log(obj1);
for
const obj1 = {a: 1, b: 2, c: 3}; const obj2 = {d: 4, e: 5, f: 6}; for (var n in obj2) {obj1[n] = obj2[n];} console.log(obj1);