react merge objects code example

Example 1: merge properties of object typescript

const target = { a: 1, b: 2 };
const source = { b: 4, c: 5 };
// Copies source to target object without changing
// target object instance
const returnedTarget = Object.assign(target, source);

Example 2: merge objects javascript

const a = { b: 1, c: 2 };
const d = { e: 1, f: 2 };

const ad = { ...a, ...d }; // { b: 1, c: 2, e: 1, f: 2 }

Example 3: spread operator merge objects

let a = {
    a: 1,
    b: true
}

let b = {
	y: 093,
	z: 'This is an object'
}

const c = {...a, ...b}

Example 4: Merging Or Copying Arrays Using Spread Operator

let techlist1= ['spring', 'java'];
 let techlist2= ['javascript', 'nodejs', 'mongo'];
 let fullstacklist= […techlist1, …techlist2];
 console.log(fullstacklist);

Example 5: react merge two objects

const object1 = {
  name: 'Flavio'
}

const object2 = {
  age: 35
}

const object3 = {...object1, ...object2 }

Example 6: two object combine together javascript

const a = { b: 1, c: 2 };
const d = { e: 1, f: 2 };

const ad = { ...a, ...d }; // { b: 1, c: 2, e: 1, f: 2 }


let objs = [{firstName: "Steven"}, {lastName: "Hancock"}, {score: 85}];

let obj = objs.reduce(function(acc, val) {
    return Object.assign(acc, val);
},{});