We can use a for...in loop
to iterate over the elements
of an array.
In the example given below,
we are using
the for...in loop
to show the index of
all the elements
in an array.
Note that the value of index
is always a string
containing the index number.
We can also use the
for...in loop to
show all the elements
of the array
as shown in the
following example.