Menghitung isi Array

let herbivora = new Array('kambing', 'sapi');

let karnivora = new Array('harimau', 'serigala');

let omnivora = new Array('ayam', 'monyet');

let binatang = new Array(herbivora, karnivora, omnivora);

console.log('Jumlah isi Array `binatang`: ' + binatang.length);

console.log('Jumlah seluruh isi Array `binatang`: ' + (binatang[0].length + binatang[1].length + binatang[2].length));