THIS IS OUTDATED! SEE https://scratch.mit.edu/projects/1247330413/ FOR THE NEWEST VERSIONS! The bookmark in that project automatically updates so you don't have to use a new bookmark. Follow the instructions in the project. You should now have a fully functional JavaScript bookmarklet for adding an extension for running JavaScript! This extension is based on the 3D extension by @lolucky This extension is version 1.11. This version fixes a certain bug that happened with a update to Scratch. If you don't know what JavaScript is, it is a computer language that is normally used for website functionality. But now we can use it on Scratch! If you have not learned JavaScript yet, you probably should. We still have blocks that don't require technical knowledge, but knowing JavaScript allows you to use more powerful ones.