Вывести массив без строк

const nums=[]
const arr = ['cat', 1, 6, 'dog']
let index = 0
for (let i = 0; i < arr.length; i++) {
    if (typeof arr[i] === 'number') {
        nums[index] = arr[i]
        index++
    }
}
console.log(nums)

const nums = [];
const arr = ['cat', 1, 6, 'dog'];
for (const item of arr) {
  if (typeof item === 'number') nums[nums.length] = item;
}
console.log(nums);