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Updated: 2026年5月31日

Add Paragraph

Original task (JA): 段落を追加

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Conclusion

Add Paragraph — free browser-based HTML practice

■ What this exercise teaches 見出しの下に「はじめてのWebページです。」という段落を追加してください。pタグで囲みます。

Why it matters in real projects

pタグは段落を表します。見出しと段落を組み合わせると、読みやすいページになります。 Similar patterns appear daily in code review and production UI work.

Step-by-step workflow

1. Read the guide and understand the goal of "Add Paragraph" 2. Review the HTML editor pane and start from the starter code 3. Open hints if stuck; compare your diff with the sample solution 4. Click Run and inspect preview/console output 5. Auto-check looks for output containing: はじめてのWebページです, はじめてのwebページです, はじめて. 6. After success, continue with adjacent exercises in the same category

Core concept explained

pタグは段落を表します。見出しと段落を組み合わせると、読みやすいページになります。

Technical focus

Key HTML elements in this task: h1, p.

Hint before you peek at the solution

pタグで段落を作ります。<p>テキスト</p> の形で、テキストの部分を書き換えてください。

Sample solution walkthrough

The solution uses HTML tags such as h1, p. Check nesting and closing tags. Explanation: pタグは段落を表します。見出しと段落を組み合わせると、読みやすいページになります。 Hint recap: pタグで段落を作ります。<p>テキスト</p> の形で、テキストの部分を書き換えてください。

Solution code

📝 Sample code
<h1>Hello World</h1>
<p>はじめてのWebページです。</p>

Common mistakes for this exact task

・Skipping the hint: pタグで段落を作ります。<p>テキスト</p> の形で、テキストの部分を書き換えてください。

Troubleshooting

Q: Preview does not change after Run A: Ensure you edited the HTML pane and clicked Run. Q: Looks correct but check fails A: Auto-check looks for output containing: はじめてのWebページです, はじめてのwebページです, はじめて. Look for typos, full-width spaces, or unclosed tags. Q: Console shows errors A: Open DevTools Console and fix bracket/quote mismatches at the reported line. Q: Hard to type on mobile A: Use landscape mode or continue on desktop—the same URL keeps progress in localStorage.

Interview / portfolio tips

・Explain the techniques in "Add Paragraph" in your own words within 30 seconds ・Practice walking through each line of the sample solution on a whiteboard ・Be ready to discuss tags: h1, p ・Mention responsive or accessibility trade-offs ・Prepare one alternative approach and why you chose this one

What to do after you pass

Move to the next exercise in the environment track, then continue the learning roadmap at /en/learning/environment/.

Keywords

Free hands-on exercise covering 段落を追加, environment, 入門, h1, p, add paragraph—search-friendly guide for Add Paragraph.

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■ Exercise task

見出しの下に「はじめてのWebページです。」という段落を追加してください。pタグで囲みます。

Hint if stuck

pタグで段落を作ります。<p>テキスト</p> の形で、テキストの部分を書き換えてください。

10pt

段落を追加

見出しの下にはじめてのWebページです。という段落を追加してください。pタグで囲みます。

エラーをクリックで該当行をハイライト。✕=エラー ⚠=警告 ›=ログ。

Roadmap · All guides

Deep dive

"Add Paragraph" is a 入門-level HTML exercise. 見出しの下に「はじめてのWebページです。」という段落を追加してください。pタグで囲みます。 Run it in-browser with automatic checking.

pタグは段落を表します。見出しと段落を組み合わせると、読みやすいページになります。 Similar patterns appear daily in code review and production UI work.

Pair this with the environment roadmap. Exercise #2 reinforces core environment skills.

Step-by-step workflow

  1. Read the guide and understand the goal of "Add Paragraph"
  2. Review the HTML editor pane and start from the starter code
  3. Open hints if stuck; compare your diff with the sample solution
  4. Click Run and inspect preview/console output
  5. Auto-check looks for output containing: はじめてのWebページです, はじめてのwebページです, はじめて.
  6. After success, continue with adjacent exercises in the same category

How to read the sample solution

The solution uses HTML tags such as h1, p. Check nesting and closing tags. Explanation: pタグは段落を表します。見出しと段落を組み合わせると、読みやすいページになります。 Hint recap: pタグで段落を作ります。<p>テキスト</p> の形で、テキストの部分を書き換えてください。

Real-world & career relevance

Junior web and frontend training often starts with seeing HTML render in a browser. This exercise matches that first step—foundation for portfolios and landing pages.

Common mistakes

  • Skipping the hint: pタグで段落を作ります。<p>テキスト</p> の形で、テキストの部分を書き換えてください。
  • Using full-width < > so HTML fails
  • Checking preview without clicking Run
  • Confusing in-browser practice with local file setup

Troubleshooting

Preview does not change after Run
Ensure you edited the HTML pane and clicked Run.
Looks correct but check fails
Auto-check looks for output containing: はじめてのWebページです, はじめてのwebページです, はじめて. Look for typos, full-width spaces, or unclosed tags.
Console shows errors
Open DevTools Console and fix bracket/quote mismatches at the reported line.
Hard to type on mobile
Use landscape mode or continue on desktop—the same URL keeps progress in localStorage.

Interview & portfolio tips

  • Explain the techniques in "Add Paragraph" in your own words within 30 seconds
  • Practice walking through each line of the sample solution on a whiteboard
  • Be ready to discuss tags: h1, p
  • Mention responsive or accessibility trade-offs
  • Prepare one alternative approach and why you chose this one

Glossary

HTML
HyperText Markup Language—structures web pages.
Browser
Software like Chrome that renders HTML.
Preview
Live view of your code output.

Keywords covered on this page

Free hands-on exercise covering 段落を追加, environment, 入門, h1, p, add paragraph—search-friendly guide for Add Paragraph.

Related dev tools

Learning roadmap

Learning roadmap →

Related exercises

Frequently asked questions

Is "段落を追加" free?

This exercise is free and runs entirely in your browser. No account or credit card required.

Difficulty and time?

"段落を追加" is level "入門". Read the guide first; beginners can usually finish within 30 minutes. Allow 5–15 minutes per exercise. Use hints, then the solution if stuck.

What after a correct answer?

After a correct answer, use "Next exercise". When you finish a category, continue on the learning roadmap.

Works on mobile?

Works on mobile browsers, but typing code is easier on a desktop.

Where are other exercises?

All exercises: /en/learn/ with category filters.

Key takeaway for "段落を追加"?

pタグは段落を表します。見出しと段落を組み合わせると、読みやすいページになります。 Hint: pタグで段落を作ります。

テキスト

の形で、テキストの部分を書き換えてください。

Where does environment fit?

Junior web and frontend training often starts with seeing HTML render in a browser. This exercise matches that first step—foundation for portfolios and landing pages.

Step-by-step for "Add Paragraph"?

1. Read the guide and understand the goal of "Add Paragraph"
2. Review the HTML editor pane and start from the starter code
3. Open hints if stuck; compare your diff with the sample solution
4. Click Run and inspect preview/console output
5. Auto-check looks for output containing: はじめてのWebページです, はじめてのwebページです, はじめて.
6. After success, continue with adjacent exercises in the same category

How to read the sample solution?

The solution uses HTML tags such as h1, p. Check nesting and closing tags.

Explanation: pタグは段落を表します。見出しと段落を組み合わせると、読みやすいページになります。

Hint recap: pタグで段落を作ります。

テキスト

の形で、テキストの部分を書き換えてください。

Something is not working?

Preview does not change after Run → Ensure you edited the HTML pane and clicked Run.
Looks correct but check fails → Auto-check looks for output containing: はじめてのWebページです, はじめてのwebページです, はじめて. Look for typos, full-width spaces, or unclosed tags.
Console shows errors → Open DevTools Console and fix bracket/quote mismatches at the reported line.
Hard to type on mobile → Use landscape mode or continue on desktop—the same URL keeps progress in localStorage.

Career / interview angle?

Explain the techniques in "Add Paragraph" in your own words within 30 seconds Practice walking through each line of the sample solution on a whiteboard Be ready to discuss tags: h1, p Mention responsive or accessibility trade-offs Prepare one alternative approach and why you chose this one

Can I change the starter code?

Yes—if it works. Understanding the starter first, then adding minimal diffs, speeds up learning.

What do the points mean?

10pt is a difficulty hint, not a score you must maximize.