JS: Investigate Live Code Examples

As a developer browsing the javascript tutorials, I would like the option to try out a script in-browser, so I don't have to use my local terminal.

A large number of the Javascript tutorials could be implemented in a live code repository, like replit. Initially, this would work best for tutorials that only do read-only tasks (as opposed to tutorials that broadcast).

Good candidates:

• https://developers.hive.io/tutorials-javascript/blog_feed.html
• https://developers.hive.io/tutorials-javascript/get_post_comments.html

Later on, this might also lead to python and ruby live code examples.