JavaScript - carga de arrays

function mayorDelArray(arr){

    let numMayor = 0;

    for (let i = 0; i < arr.length; i++) {

        if(arr[i] > numMayor){

            numMayor = arr[i];

        }

    }

    console.log(numMayor)

    return numMayor;

}

mayorDelArray([1,2,3,4,6,7,2232,5,7,3,1,661656,2,4,6,34,67,77655]);