Stuck on checking if object has a property

JavaScript
1

Tell us what’s happening:

Stuck. Please help.

Your code so far


let users = {
  Alan: {
    age: 27,
    online: true
  },
  Jeff: {
    age: 32,
    online: true
  },
  Sarah: {
    age: 48,
    online: true
  },
  Ryan: {
    age: 19,
    online: true
  }
};

function isEveryoneHere(obj) {
  // change code below this line
if(users.hasOwnProperty('Allan','Jeff','Sarah','Ryan')) {
   return true;
}
return false;
  // change code above this line
}

console.log(isEveryoneHere(users));

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-data-structures/check-if-an-object-has-a-property

2

You should look at the documentation for hasOwnProperty().

It only takes one parameter.

3

Still not working with one parameter

4

Spelling of Alan or Allan?

5

message is saying function isEveryoneHere should return true if Alan, Jeff, Sarah and Ryan are properties on the users object.

6

i see where i messed up. fixed it. Thanks