Practice with constructors and prototypes
##User Interface and Functionality Press play to play the first song in the playlist Next it jumps to the next song Stop to stop current song
##Song Properties
- title
- artist
- duration
- isPlaying
##Song Methods
- play
- stop
- toHTML
##Playlist Properties
- songs
- nowPlaying
##Playlist Methods
- add
- play
- next
- stop
- renderInElement
Object Oriented Javascript: