es6 merge objects spread code example

Example 1: merge objects javascript es6

const response = {
  lat: -51.3303,
  lng: 0.39440
}

const item = {
  id: 'qwenhee-9763ae-lenfya',
  address: '14-22 Elder St, London, E1 6BT, UK'
}

const newItem = { ...item, location: response }; // or { ...response } if you want to clone response as well

console.log(newItem );

Example 2: Merging Or Copying Arrays Using Spread Operator

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