The new extension for using JavaScript on Scratch! (No, this is not a rickroll, it actually works) Get the bookmarklet required to run this project here: https://scratch.mit.edu/projects/1316301635/ Please remember to click the bookmarklet BEFORE you run the project to add the extension. You should see a warning screen. If not, click it again. Also check out the official website at https://ironbill25.github.io/projects/scratchjs/
This extension is based off the 3D extension by @lolucky You can find the project here: https://scratch.mit.edu/projects/717031217/ Thanks to @ulricoiho for help with the extension code.