demo array methods

log each fruit in fruits array:

forEach

filter all fruits that start with p:

filter

map creates new array where elements are fruit name✼:

map

reduce numbers array to its sum:

reduce

the index of kiwi in fruit array is:

indexOf

does mango includes in fruits array?

includes

sort numbers in descending:

sort

join numbers by ✼:

join

push 100 at the end:

push

Removes the last element from numbers:

pop

shift first element of fruits array to new fruits array

shift

here unshift '100' at the start of numbers, returns the new length of numbers.

unshift

reverse numbers array

reverse