map function javascript object mapping code example

Example 1: map through keys javascript

var myObject = { 'a': 1, 'b': 2, 'c': 3 };

for (var key in myObject) {
  if (myObject.hasOwnProperty(key)) {
    myObject[key] *= 2;
  }
}

console.log(myObject);
// { 'a': 2, 'b': 4, 'c': 6 }

Example 2: javascript map

const numbers = [0,1,2,3];

console.log(numbers.map((number) => {
  return number;
}));