A Quick Journey Through HTML/CSS/JS

Last weekend, I went through an 11.5-hour front-end course in one sitting. It wasn’t the first time I’d seen HTML, CSS, or JavaScript, but it was the first time all the pieces actually clicked together. No coding drills, no pressure to build anything—just sitting down and understanding how the front end really works.

The instructor, Lao Du, starts from the simplest things like <b> and <table>, and slowly builds up the full picture of structure (HTML), style (CSS), and behavior (JavaScript). I remember wondering what < even meant at the beginning, but by the end I could write a full page with forms, iframes, layout boxes, and basic event logic. It felt like finally seeing the skeleton of the web.

What I covered wasn’t rocket science—it was somewhere in the middle in terms of depth. But that’s exactly what made it valuable. It gave me a sense of how things fit together. I now understand what people mean by separation of structure, presentation, and behavior, and more importantly, I know where to look when something doesn’t look right or doesn’t work.

So here’s a quick thank-you to Lao Du for making the basics feel clear, complete, and actually enjoyable. I might not be jumping into front-end projects right away, but at least now I know how each part of the front-end stack communicates—and that’s a big mental step forward.