Chrome includes (almost) a fully functional IDE. If you dig around, you can bind Chrome's Javascript debugger to files on disk. You can also interactively tweak

Chrome includes (almost) a fully functional IDE. If you dig around, you can bind Chrome's Javascript debugger to files on disk. You can also interactively tweak the CSS that's rendered and then copy and paste it back to your sources. But, I don't see why this guy thinks installing NodeJS is hard. I have a low tolerance for painful installs, but NodeJS and Visual Studio Code were quite easy for me to install and pick up. Furthermore, you can code in a browser: Azure supports this, although it was somewhat buggy when I tried it.