How do we show people what we coded and what are we capable of doing trough code?
I find that the best way to show understanding of how code works is to collect and curate relevant articles and repost them somewhere visible. One example is my professional twitter account , another is my portfolio website .
This shows that you're continuing to learn, you're up to date, you read about complex problems, and you've seen examples of how to apply this knowledge.
It's easy to do since you're just bookmarking things, retweeting things, and adding a tiny bit of commentary. The hard part is tracking down these resources to read. That's where developer communities like Hashnode and Twitter can be helpful.
Chances are if you post them on a network like Twitter or Hashnode you're also conversing about them and not just posting them to a static page.