Remove all falsy values from an array

Question

I would like to remove all falsy values from an array. Falsy values in JavaScript are false, null, 0, \"\", undefined, and NaN.

Answer 1

bouncer function:

function bouncer(arr) {
  return arr.filter((val) => {
    return !!val;
  });
}

console.log(bouncer([7, "ate", "", false, 9]));