This video is the short version of the full-length video: How To Program A Controllable Sliding Banner with JavaScript
Some people actually pay for add-ons that do this kind of thing, but you can program your own sliding banner without needing to pay a single penny.
It’s quite hard work to get everything working correctly, which is why I recommend watching the full-length video – I demonstrate each step by running the code as we go along, which means you get to see exactly how it works.