JavaScript Arrays - Object

Method	Mutates	Description
concat	no
copyWithin	mutates
every
fill	mutates
filter
find		returns the value of the first element that satisfies the provided testing function.
findIndex
forEach
from
includes
indexOf
join
lastIndexOf
length
map		it will take each item and add it to an array
pop	mutates	removes and displays the last item from the end
push	mutates	adds an item to the end
reduce		executes a reducer function (that you provide) on each element of the array, resulting in single output value.
reduceRight
reverse	mutates	reverse the order of the items
shift	mutates	remove an item from the beginning of an array
slice		remove and displays part of the array
some
sort	mutates	alphabetically sort items.
splice	mutates	modifies an array by removing existing elements and/or adding new elements.
split
unshift	mutates	adds an item to the beginning of an array, and returns the new length