remove falsy values from array javascript

function bouncer(arr) {
 arr = arr.filter(function (n) { 
    return (n !== undefined && n !== null && n !== false && n !== 0 && n !== "" && isNaN()!=NaN); });
  return arr;
}

bouncer([7, "ate", "", false, 9, NaN], "");
let mixedArr = [0, “blue”, “”, NaN, 9, true, undefined, “white”, false];
let trueArr = mixedArr.filter(Boolean);
console.log(trueArr); // returns [“blue”, 9, true, “white”]