Everything Be True = Undefined?

JavaScript
1

Tell us what’s happening:

I am doing the challenge to check all objects in array return true based on second argument. I have tested with logging to console and all parts of code seem to be running correctly but the overall function keeps returning undefined. Can anyone help please?

Your code so far


function truthCheck(collection, pre) {

collection.every ((object, index) => {

  if (object.hasOwnProperty(pre)) {
    return true;
  } else {
    return false;
  }
});

}

console.log(truthCheck([{"user": "Tinky-Winky", "sex": "male"}, {"user": "Dipsy", "sex": "male"}, {"user": "Laa-Laa", "sex": "female"}, {"user": "Po", "sex": "female"}], "sex"));

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36.

Challenge: Everything Be True

Link to the challenge:

2

Solved it myself. Needed return every block :crazy_face:

function truthCheck(collection, pre) {

  return collection.every ((object, index) => {

    if (object.hasOwnProperty(pre) 
      && object[pre]) {
      return true;
    } else {
      return false;
    }
  });

}

console.log(truthCheck([{"user": "Tinky-Winky", "sex": "male"}, {"user": "Dipsy", "sex": "male"}, {"user": "Laa-Laa", "sex": "female"}, {"user": "Po", "sex": "female"}], "sex"));
3

It seems you are not using Array.every() correctly.
Check this pseudo code

collection.every(obj => obj.has(5))

Will return true if every obj has 5 and return false if one of the obj’s does not fulfil that condition

1 Like
4

Thanks samolex. I got my code to work but your way looks alot cleaner so will use that going forward!

1 Like