"Infinity" if I don't pass any number as parameters

October 7, 2022

Having this issue most likely I am doing everything wrong, but I wanted to find the smallest and the biggest number inside an array and return it to a new object, and if this array is empty I wanted to have a simple empty object. This is the logic I have used

    function findBiggestAndSmallest(numbers) {
      const biggest = Math.max(...numbers);
      const smallest = Math.min(...numbers);
      if (numbers === []) {
        return {};
      }
      return { biggest, smallest };
    }
    
    console.log(findBiggestAndSmallest([]));
    console.log(findBiggestAndSmallest([2,1,5,100,20]));

and it’s working fine as long I put numbers inside the array but when I leave an empty array the result is -infinity and Infinity, even though I specified that if the parameter is an empty array just return an empty object.

Thank you for your support.

>Solution :

// This never works
console.log([] ===[])


function findBiggestAndSmallest(numbers) {
  // Always do error handling first :)
   if (!numbers.length) {
    return {};
  }

  const biggest = Math.max(...numbers);
  const smallest = Math.min(...numbers);

  return { biggest, smallest };
}

console.log(findBiggestAndSmallest([]));
console.log(findBiggestAndSmallest([2,1,5,100,20]));