Question on Everything Be True

1

Hello. I can’t seem to figure out how come in my algorithm the if statement passes everything as true. Can someone please help me with this code?


function truthCheck(collection, pre) {
var truthCount = 0;
  
  
  for(var i = 0; i<collection.length; i++) {
    if (collection[i].hasOwnProperty(pre) === true) {
      truthCount +=1;
    }
  }
  if (truthCount == collection.length) {
    return true;
  } else {
    return false;
  }
}
truthCheck([{"user": "Tinky-Winky", "sex": "male", "age": 0}, {"user": "Dipsy", "sex": "male", "age": 3}, {"user": "Laa-Laa", "sex": "female", "age": 5}, {"user": "Po", "sex": "female", "age": 4}], "age");

no matter what the argument that’s passed in, truthCount always ends up equalling collection.length.

2

Your usage of collection[i].hasOwnProperty(pre) tests if the element has the same property. Your code returns true for all 9 examples, as their elements all have the same property as pre.

What you should be testing for is the value of the properties. The challenge gives you this hint:

Remember, you can access object properties through either dot notation or notation.

3

But isn’t the function supposed to test if it has the same property as pre?
I’m confused as to what my code is doing that it shouldn’t be.

4

You want to check if every property pre in your collection holds a truthy value.

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