Quick and Dirty Way to Copy a JavaScript Object

copy-object.js

//--------- PART 1 -------------------

const objectA = {
  foo: ['a', 'b', 'c']
};

const objectB = Object.assign({}, objectA);

console.dir(objectB); // {"foo":["a","b","c"]}

objectA.foo.push('d');
objectA.foo.push('e');

console.dir(objectB); {"foo":["a","b","c"]} //{"foo":["a","b","c","d","e"]}

//--------- PART 2 -------------------

function copyObject (objectToCopy) {
  return JSON.parse(JSON.stringify(objectToCopy));
};

const objectA = {
    foo: ['a', 'b', 'c']
};

const objectB = copyObject(objectA);

console.dir(objectB); // {"foo":["a","b","c"]}

objectA.foo.push('d');
objectA.foo.push('e');


console.dir(objectB); // {"foo":["a","b","c"]}