Js change object inside array in for each loop

Question

I want to change the current object in for each loop and it does not work, Why it is not working and how can i do this?

var arr = [{num: 1}, {num: 2}];

arr.         


        

Answer 1

Another variety to the list of answers

var arr = [{num: 1}, {num: 2}];

arr.forEach(function(item) {
  item.something = 2;//setting the value
  delete item.num;//deleting the num from the object
});