Adding an Array property on the object at the given key

Question

I need help in how to add an array property to an object with given key where the input is

var myObj = {};
var myArray = [1, 3];

and the output should be like this:

addArrayProperty(myObj, 'myProperty', myArray);

console.log(myObj.myProperty); // --> [1, 3]

I built a code and it gives me the exact output but when changing the values it gets undefined!

  var myObj = {};
  var myArray = [1, 3];
  var myProperty = myArray;
function addArrayProperty(obj, key, arr) {
  myObj.myArray = myObj.myProperty;
  return myArray;
}
addArrayProperty(myObj, 'myProperty', myArray);

I believe that my code has something wrong can any one help? thanks in advance.

score 0 · Answer 1 · answered Jul 15 '17 at 15:44

0

You should replace myObj.myArray = myObj.myProperty;

to myObj.myProperty = myObj.myArray;

var myObj = {};
var myArray = [1, 3];
function addArrayProperty(obj, key, arr) {
  myObj[key] = arr;
  return myObj;
}
addArrayProperty(myObj, 'myProperty', myArray);

console.log(myObj);
console.log(myObj.myProperty); // [1, 3]

answered Jul 15 '17 at 15:44

Mohamed Abbas

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it still gives undefined when I console log myObj? do you know why? – Salma Elshahawy Jul 15 '17 at 15:47
@Salma It's works for me, try to run the code in my answer, If you still have a problem. Put your code on jsfiddle.net . – Mohamed Abbas Jul 15 '17 at 15:51

Adding an Array property on the object at the given key

1 Answers1