The includes() method
returns true
if the given substring is found in a string
otherwise
it returns false.
We can achieve this using indexOf() as well.
Although we can use indexOf() instead of includes(),
indexOf() is used when we not only have to check
if a substring is found in a string,
but also know the index of the string from which
that substring is found.
includes() is used when we only need
to check the presence of a substring.