I am trying to create an algorithm for word count in JavaScript, I am creating a for-in loop to fetch each word from array and then pushing them to the object but getting error while I am setting each object key to each array value. 

```js
const wordCount = input => {
  let newArr = input.split(" ");
  let obj = {};
  for (let i in newArr) {
    console.log(newArr[i]); // This returns value
    obj.newArr[i] = 1;  // This gives error:- Uncaught TypeError: Cannot set property '0' of undefined
  }
  console.log(obj);
};
wordCount("heyy how you doin heyy");
```