Im currently working with a friend who wants to create a mangareader for his website. I'm looking into javascript as the most efficient method although i dont have a clue how to do this

What i'm trying to do is allow the user to read without having to reload the page, just the image. I can easily make it change the image on click, but i need some help on how i can make the image number incriment by 1 each time

The file names will be in this format
Episodeid - page
e.g
1-1
1-2
1-3
for the first 3 pages of the first episode.
All files will be of the same type, most likely JPG or PNG

any help will be appreciated!