Is it possible to add dynamically named properties to JavaScript object?

Question

In JavaScript, I\'ve created an object like so:

var data = {
    \'PropertyA\': 1,
    \'PropertyB\': 2,
    \'PropertyC\': 3
};

Is it poss

Answer 1

It can be useful if mixed new property add in runtime:

data = { ...data, newPropery: value}

However, spread operator use shallow copy but here we assign data to itself so should lose nothing