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

function bouncer(arr) {  
  var result = []; 
   for (var i = 0; i < arr.length; i++) {
     if (arr[i]) {
      result.push(arr[i]);
     }
   }
  return result;
 }

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