Tables and live status messages

What this means

Data tables need header cells and captions. Important asynchronous updates can use a polite live region so assistive technology announces them.

In beginner terms, this topic answers one practical question: "What should I write, and why does React care about it?" Do not try to memorize the syntax first. First understand the idea, then connect the syntax to that idea.

Why it matters

Quiz history and progress tables need relationships that remain understandable without visual alignment.

When you build real React screens, this idea helps you decide where data should live, what the user should see, and what should happen after an interaction. That is why this lesson is part of the main path instead of being an optional detail.

Step by step

1. Notice the UI problem this topic solves. 2. Look at the smallest possible example. 3. Change one value and predict what should appear. 4. Run the example and compare the result with your prediction. 5. Use the practice task before moving on.

Small example

<table><caption>Quiz history</caption><thead><tr><th>Quiz</th><th>Score</th></tr></thead></table>

Common mistake

Do not copy tables and live status messages syntax without explaining what problem it solves and checking the result.

Practice task

Change one part of the example, predict the result, run it, and explain the result in your own words.

Remember this

Do not use tables only for page layout.