Does anyone have any good examples of simple eLearning to practice "coding" concepts?

We are in the middle of reworking an 11 week workshop in coding for front end development, back end development, and data. We were given the requirement of removing all ILT and making it straight eLearning. Ignoring the argument of, "Is that the best solution?". We are looking for ways we can do coding practice (Java, JS, CSS, etc) using only eLearning. We brainstormed, and had some ideas that I will share later, but was unable to really find any examples on the web of...any solutions...much less successful or good ones. Has anyone done this that cares to share? If not share, discuss strategies? I appreciate it!