Help w/ for...in Statement

JavaScript
1

Tell us what’s happening:
Cannot seems to get this right. Can anyone tell me what I am doing wrong? Basic data structures for...in statement.

Your code so far


function countOnline(usersObj) {
// change code below this line
let number = 0;
for (let user in usersObj){
  if (usersObj[user][online] == true){
    number++
  }
} return number;
// change code above this line
}

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36.

Challenge: Iterate Through the Keys of an Object with a for…in Statement

Link to the challenge:
https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-data-structures/iterate-through-the-keys-of-an-object-with-a-for...in-statement

2

What is online in your code?

3

Your logic for the loop works nicely. The problem with your code is the way that you’re using the bracket notation. When you’re using bracket notation, you have to access a string, so the conditional statement will need to look like this:

if (usersObj[user]['online'] === true) {

Also, if you log the value of user, you’ll see that it is a string as well, so that’s consistent. Alternatively, you could use dot notation to access that property like so:

if (usersObj[user].online === true) {

Cheers!

4

Worked! Thanks a bunch, man.