2. DESCRIBE IT
The findIndex() method is one of many
members on the Array prototype chain.
reduceRight()
some()
concat()
findIndex()
keys()
forEach()
includes()
join()
splice()
map()
reduce()
flat()
3. Hmmm. What is the position of the first action movie
in the list?
The findIndex() method finds the first value within an
array that meets our criteria and returns its index.
A callback function containing a nested conditional is
applied to each element returning the index value of the
first element that evaluates to true. Otherwise, it returns -1.
Still desribing...