Check if an Object has a Property [incorrect solution?]

Tell us what’s happening:
The hint/solution to this problem in freecodecamp has multiple arguments passed to the .hasOwnProperty(arg) method but when I check the MDN docs ( it seems to suggest you can only have 1 argument passed to this - I mean you can pass multiple but it only actually tests the first one.

Amirite? or nah

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

obj.hasOwnProperty('Alan') &&
obj.hasOwnProperty('Jeff') &&
obj.hasOwnProperty('Bob') &&

  // change code above this line


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Link to the challenge:

1 Like

Who’s Bob and where’s Sarah?

Your mistake is that obj.hasOwnProperty('Bob') should be replaced with obj.hasOwnProperty('Sarah')

Edit: As for your question, FCC hint is wrong, only the first param is being checked, aka “Alan”