how to combine two objects from a single object javascript code example

Example 1: merge two objects javascript

Object.assign(target, sourceObj1, sourceObj2, ...);

Example 2: javascript combine objects

const obj1 = {'a': 1, 'b': 2};
const obj2 = {'c': 3};
const obj3 = {'d': 4};

const objCombined = {...obj1, ...obj2, ...obj3};