HTML interview questions

Review short answers, detailed answers, practical code and common mistakes.

1. How would you explain HTML Introduction in HTML during an interview?beginner

HTML Introduction is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem html introduction solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

<section aria-labelledby="lesson-title">
  <h1 id="lesson-title">HTML Introduction</h1>
  <p>Use clear HTML so browsers, users and search engines understand the page.</p>
  <a href="/learn/tutorials/html">Continue learning HTML</a>
</section>

2. How would you explain Document Structure in HTML during an interview?beginner

Document Structure is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem document structure solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

3. How would you explain Elements in HTML during an interview?beginner

Elements is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem elements solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

4. How would you explain Attributes in HTML during an interview?beginner

Attributes is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem attributes solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

<section aria-labelledby="lesson-title">
  <h1 id="lesson-title">Attributes</h1>
  <p>Use clear HTML so browsers, users and search engines understand the page.</p>
  <a href="/learn/tutorials/html">Continue learning HTML</a>
</section>

5. How would you explain Headings in HTML during an interview?beginner

Headings is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem headings solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

6. How would you explain Paragraphs in HTML during an interview?beginner

Paragraphs is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem paragraphs solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

7. How would you explain Links in HTML during an interview?beginner

Links is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem links solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

<section aria-labelledby="lesson-title">
  <h1 id="lesson-title">Links</h1>
  <p>Use clear HTML so browsers, users and search engines understand the page.</p>
  <a href="/learn/tutorials/html">Continue learning HTML</a>
</section>

8. How would you explain Images in HTML during an interview?beginner

Images is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem images solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

9. How would you explain Lists in HTML during an interview?beginner

Lists is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem lists solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

10. How would you explain Tables in HTML during an interview?beginner

Tables is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem tables solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

<table>
  <caption>Monthly orders</caption>
  <thead><tr><th>Customer</th><th>Total</th></tr></thead>
  <tbody><tr><td>Asha</td><td>$59</td></tr></tbody>
</table>

11. How would you explain Forms in HTML during an interview?intermediate

Forms is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem forms solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

12. How would you explain Input Types in HTML during an interview?intermediate

Input Types is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem input types solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

13. How would you explain Semantic HTML in HTML during an interview?intermediate

Semantic HTML is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem semantic html solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

<main>
  <article aria-labelledby="product-title">
    <h1 id="product-title">Wireless keyboard</h1>
    <p>Compact keyboard with two-year battery life.</p>
  </article>
</main>

14. How would you explain Audio and Video in HTML during an interview?intermediate

Audio and Video is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem audio and video solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

15. How would you explain Iframe in HTML during an interview?intermediate

Iframe is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem iframe solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

16. How would you explain Meta Tags in HTML during an interview?intermediate

Meta Tags is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem meta tags solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

<section aria-labelledby="lesson-title">
  <h1 id="lesson-title">Meta Tags</h1>
  <p>Use clear HTML so browsers, users and search engines understand the page.</p>
  <a href="/learn/tutorials/html">Continue learning HTML</a>
</section>

17. How would you explain HTML Entities in HTML during an interview?intermediate

HTML Entities is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem html entities solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

18. How would you explain SVG Basics in HTML during an interview?intermediate

SVG Basics is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem svg basics solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

19. How would you explain Canvas Basics in HTML during an interview?intermediate

Canvas Basics is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem canvas basics solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

<section aria-labelledby="lesson-title">
  <h1 id="lesson-title">Canvas Basics</h1>
  <p>Use clear HTML so browsers, users and search engines understand the page.</p>
  <a href="/learn/tutorials/html">Continue learning HTML</a>
</section>

20. How would you explain Accessibility in HTML during an interview?intermediate

Accessibility is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem accessibility solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

21. How would you explain SEO-friendly HTML in HTML during an interview?advanced

SEO-friendly HTML is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem seo-friendly html solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

22. How would you explain Form Validation in HTML during an interview?advanced

Form Validation is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem form validation solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

<form action="/checkout" method="post">
  <label for="email">Email address</label>
  <input id="email" name="email" type="email" required />
  <button type="submit">Send receipt</button>
</form>

23. How would you explain Structured Data Basics in HTML during an interview?advanced

Structured Data Basics is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem structured data basics solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

24. How would you explain Performance-friendly HTML in HTML during an interview?advanced

Performance-friendly HTML is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem performance-friendly html solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

25. How would you explain Best Practices in HTML during an interview?advanced

Best Practices is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem best practices solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

<section aria-labelledby="lesson-title">
  <h1 id="lesson-title">Best Practices</h1>
  <p>Use clear HTML so browsers, users and search engines understand the page.</p>
  <a href="/learn/tutorials/html">Continue learning HTML</a>
</section>

26. How would you explain Portfolio Page Project in HTML during an interview?advanced

Portfolio Page Project is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem portfolio page project solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

27. How would you explain Blog Layout in HTML during an interview?advanced

Blog Layout is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem blog layout solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

28. How would you explain Resume Page in HTML during an interview?advanced

Resume Page is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem resume page solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

<section aria-labelledby="lesson-title">
  <h1 id="lesson-title">Resume Page</h1>
  <p>Use clear HTML so browsers, users and search engines understand the page.</p>
  <a href="/learn/tutorials/html">Continue learning HTML</a>
</section>

29. How would you explain Landing Page in HTML during an interview?advanced

Landing Page is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem landing page solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.

30. How would you explain HTML Review in HTML during an interview?advanced

HTML Review is best explained with its purpose, a small example, and one common mistake.

Start by naming the problem html review solves in HTML. Then show a short example, discuss the tradeoff, and mention how you would test it in a real codebase.