So userscripts are local scripts written by the user and executed in the browser. This process can be done by manually typing in your script in the console and hitting enter, but there are browser extensions to help you do this automatically.
With the help of such extensions, interesting things can be done. And in this case, it is about fetching the album images on duitang.com, a chinese website very similar to pinterest.com.
Instructions can be found here: https://github.com/kaneorotar/duitang-userscript
Have fun and Enjoy!
P.S. This is my first public GitHub repository. Hopefully more is on the way~