Task 137: what's the deal with functions?

sveur

Ok, I can't get this to work....

My plan is:
-Import the array
-for each element in the array
--if positive, add to the positiveElements array
-Return positiveElements array

export const positiveElements = (arr) => {
  for (let i=0; i<arr.length ; i++) {
      if (arr[i]>0) {
        positiveElements.push(arr[i]);
      }
}
return positiveElements;
}

But this doesn't run at all...
What's the deal with
export const positiveElements = (arr) => {
Does this add arr-array into the positiveElements constant? So that I should rather remove from the array the negative and zero elements? This seems difficult, because then the for-loop won't work, as the length gets shorter.

Any hints, please?

sveur

OK, so positiveElements is a function and not an array. Making a new array works, but is this the right way to solve the task? Here is my working solution:

export const positiveElements = (arr) => {
 const positive = []; 
  for (let i=0; i<arr.length ; i++) {
      if (arr[i]>0) {
        positive.push(arr[i]);
      }
}
return positive;
}

Coderslang_Master

sveur Yes, that's the correct approach.

You could also use the .filter method, which you'll learn in the next lectures.

P.S. You did a great job explaining your thought process. I'll use this post as a reference 🙂