can you push properties to an object js code example

Example 1: js push in object

let obj = {};
let objToAdd1 = { prop1: "1", prop2: "2" };
let objToAdd2 = { prop3: "3", prop4: "4" };

// obj variabile could be empty or not, it's the same
obj = { ...obj, ...objToAdd1 };
obj = { ...obj, ...objToAdd2 };

// Note that i used the spread operator... This syntax is available
// only for the most recent js ES (from ES6 on, if i'm not wrong) :)

console.log(obj);

Example 2: object javascript append

var list = [];

list.push({name:'John', last_name:'Doe'});
list.push({name:'Jane', last_name:'Doe'});

console.log(list);
/* Result:
[
  {
    "name": "John",
    "last_name": "Doe"
  },
  {
    "name": "Jane",
    "last_name": "Doe"
  }
]
*/