Jennifer Lopez videos can be viewed online for free at multiple websites, including her Vevo channel on YouTube and on MTV. These websites are free to watch the musician's videos, though YouTube can often have a larger number of videos available.
On the YouTube channel for Jennifer Lopez, there is an option to view all of her videos available on the channel or users can view the playlists that have been set up. The channel also has a search feature that will allow users to search directly on the Vevo page. MTV's page for the artist has music videos and interviews. There are no playlist options on this setup, but the shorter list of videos is very easy to scroll through.