Currently I have a webpage displaying x images using javascript...the images are just all in an array and are defined as x.jpg, xx.jpg etc...everytime I want to replace an image, or add an image ...

Upload and Display Images Using HTML CSS JavaScript Upload and display images using HTML, CSS, and JavaScript enables users to upload images from their devices and view them on a webpage. This feature ...

You should get a look at the compiling.sh (for UNIX) to have an easy way to convert all src files (sass, coffee, haml etc.) at once. You could also use guard, so that everything compiles automaticly ...