Falsy Bouncer

function bouncer(arr) {
  // Don't show a false ID to this bouncer.
  var filtered = [];
  filtered = arr.filter(function (x)    {
    return	x !==undefined && x !==null & x!==false && x === NaN && x !==0 && x !== "";
    
  });
  return filtered;
}

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



// bouncer([7, "ate", "", false, 9]) should return [7, "ate", 9]. 
// bouncer(["a", "b", "c"]) should return ["a", "b", "c"]. 
// bouncer([1, null, NaN, 2, undefined]) should return [1, 2]. 
// bouncer([false, null, 0, NaN, undefined, ""]) should return [].