freeCodeCamp Challenge Guide: Use the every Method to Check that Every Element in an Array Meets a Criteria

Guide
1

Use the every Method to Check that Every Element in an Array Meets a Criteria

Problem Explanation

Use the every method inside the checkPositive function to check if every element in arr is positive. The function should return a Boolean value.

Relevant Links

Hints

Hint

Don’t forget return.

Solutions

Solution 1 (Click to Show/Hide) 
function checkPositive(arr) {
  // Add your code below this line

  return arr.every(val => val > 0);
  // Add your code above this line
}
checkPositive([1, 2, 3, -4, 5]);
Solution 2 (Click to Show/Hide) 
function checkPositive(arr) {
  // Add your code below this line
  return arr.every(function(value) {
    return value > 0;
  });
  // Add your code above this line
}
checkPositive([1, 2, 3, -4, 5]);
39 Likes