A= [[1, 2, 3], [4, 5, 6]] np.append(A, [[7, 8, 9]], axis=0) >> array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]) #or np.r_[A,[[7,8,9]]]
>>> np.append([1, 2, 3], [[4, 5, 6], [7, 8, 9]]) array([1, 2, 3, ..., 7, 8, 9])
// initialize array var arr = [ "Hi", "Hello", "Bonjour" ]; // append new value to the array arr.push("Hola"); console.log(arr);