HTML5 Interview Questions And Answers

In this article, we share the top 40 HTML5 interview questions and answers. The interview questions will help you prepare for the interview on HTML5. These are the top 40 Interview questions and answers that are asked by top recruiters.

HTML, or Hypertext Markup Language, is a crucial component of web development. It is used to create and structure content on websites, providing the backbone of web pages.

As an essential part of web development, HTML (Hypertext Markup Language) is a topic that frequently comes up during interviews for web development jobs.

HTML5 is essential knowledge for any web developer, whether beginner or experienced. Therefore, it is no surprise that HTML is often a topic of discussion during web development interviews.

In this article, we will explore some common HTML5 interview questions and their answers, ranging from basic to advanced, to help you prepare for your next web development job interview.

Whether you are a beginner or an experienced developer, preparing for an interview can be nerve-wracking, especially if you’re unsure what to expect.

To help you in your preparation, we’ve compiled a list of some of the top HTML5 interview questions that you may encounter, along with some tips on how to answer them effectively.

By reviewing these questions and practicing your responses, you can feel confident and prepared to ace your next HTML interview.

1. What is the difference between HTML and XHTML?

XHTML is a stricter version of HTML, which follows XML syntax rules. In XHTML, all tags must be closed, and all attributes must have values.

Here’s an example of a difference in syntax between HTML and XHTML:

HTML: <img src="image.png">
XHTML: <img src="image.png" />

2. What are some new features in HTML5?

Some new features in HTML5 include semantic elements, audio and video support, canvas element for graphics, geolocation, web sockets, local storage, and responsive design features.

3. How do you create a hyperlink in HTML?

Use the <a> tag to create a hyperlink.

Here’s an example:

<a href="https://www.example.com">Click here</a>

4. How do you create an image in HTML?

Use the <img> tag to insert an image.

Here’s an example:

<img src="image.png" alt="Description of image">

5. How do you create a form in HTML?

Use the <form> tag to create a form. Here’s an example:

<form action="/submit-form" method="post">
  <label for="name">Name:</label>
  <input type="text" id="name" name="name"><br>
  <label for="email">Email:</label>
  <input type="email" id="email" name="email"><br>
  <input type="submit" value="Submit">
</form>

6. What is the difference between GET and POST methods in form submission?

The GET method sends form data in the URL, while the POST method sends form data in the request body.

The GET method is generally used for retrieving data, while the POST method is used for submitting data.

For example: When trying to log in, we will always use a form to send/submit data and while reading emails, we will use the GET method to “retrieve” the data.

7. What is the difference between an ID and a class in HTML?

An ID is used to uniquely identify an element, while a class is used to group multiple elements together.

Here’s an example:

<div id="header">This is the header</div>
<div class="content">This is some content</div>
<div class="content">This is some more content</div>

8. How do you create a table in HTML?

Use the <table> tag to create a table. Inside the <table> tag, we will use <tr> for rows and <td> for table data.

Here’s an example:

<table>
  <tr>
    <th>Header 1</th>
    <th>Header 2</th>
  </tr>
  <tr>
    <td>Row 1, Cell 1</td>
    <td>Row 1, Cell 2</td>
  </tr>
  <tr>
    <td>Row 2, Cell 1</td>
    <td>Row 2, Cell 2</td>
  </tr>
</table>

9. How do you create a list in HTML?

Use the <ul> tag to create an unordered list, and the <ol> tag to create an ordered list. Inside the <ol> or the <ul> we will use the <li> tag to create list items.

Here’s an example of an unordered list:

<ul>
  <li>Item 1</li>
  <li>Item 2</li>
  <li>Item 3</li>
</ul>

10. How do you create a button in HTML?

Use the <button> tag to create a button.

Here’s an example:

<button>Click me</button>

11. How do you create a dropdown list in HTML?

Use the <select> tag to create a dropdown list, and the <option> tag to specify the options in the list.

Here’s an example

<select>
  <option value="option1">Option 1</option>
  <option value="option2">Option 2</option>
  <option value="option3">Option 3</option>
</select>

12. What is the difference between a span and a div in HTML?

A span is an inline element used to a group text or other inline elements, while a div is a block-level element used to group other elements together.

A div will occupy the entire width of the page by default.

A span only occupies the width of the element.

Here’s an example:

<span>This is some text</span>
<div>This is a div with some content</div>

13. How do you add comments to an HTML document?

Use the <!-- --> syntax to add comments to an HTML document.

Here’s an example:

<!-- This is a comment -->

14. How do you add a video to an HTML document?

Use the <video> tag to add a video to an HTML document.

Here’s an example:

<video src="video.mp4" controls>
  Your browser does not support the video tag.
</video>

15. How do you add a link to an email address in HTML?

Use the mailto: prefix to create a link to an email address.

Here’s an example:

<a href="mailto:email@example.com">Send an email</a>

16. How do you create a responsive image in HTML?

Use the <img> tag with the srcset and sizes attributes to create a responsive image.

Here’s an example:

<img src="small.jpg"
     srcset="medium.jpg 1000w,
             large.jpg 2000w"
     sizes="(max-width: 600px) 100vw,
            (max-width: 1000px) 50vw,
            33.3vw">

17. How do you create a meta tag in HTML?

Use the <meta> tag to create a meta tag.

Here’s an example:

<meta name="description" content="Description of your website">

18. How do you create a button with an onclick event in HTML?

Use the <button> tag with the onclick attribute to create a button with an onclick event.

Here’s an example:

<button onclick="alert('Button clicked')">Click me</button>

19. How do you add a background image to an HTML element?

Use the background-image CSS property to add a background image to an HTML element.

Here’s an example:

<div style="background-image: url('image.jpg');"></div>

20. How do you create a responsive layout in HTML?

We will make use of the semantic html5 elements for structure and use CSS media queries to create a responsive layout.

Here’s an example:

@media (max-width: 600px) {
  /* styles for small screens */
}
@media (min-width: 601px) and (max-width: 1000px) {
  /* styles for medium screens */
}
@media (min-width: 1001px) {
  /* styles for large screens */
}

21. How do you create a checkbox in HTML?

Use the <input> tag with type="checkbox" to create a checkbox in HTML.

Here’s an example:

<label for="checkbox">Check me:</label>
<input type="checkbox" id="checkbox" name="checkbox">

22. How do you create a radio button in HTML?

Use the <input> tag with type="radio" to create a radio button in HTML.

Here’s an example:

<label for="radio1">Option 1:</label>
<input type="radio" id="radio1" name="radio" value="option1">

<label for="radio2">Option 2:</label>
<input type="radio" id="radio2" name="radio" value="option2">

23. How do you create a range slider in HTML?

Use the <input> tag with type="range" to create a range slider in HTML.

Here’s an example:

<label for="slider">Choose a value:</label>
<input type="range" id="slider" name="slider" min="0" max="100" value="50">

24. How do you create a canvas in HTML?

Use the <canvas> tag to create a canvas in HTML, and use JavaScript to draw on the canvas.

Here’s an example:

<canvas id="myCanvas"></canvas>

<script>
  var canvas = document.getElementById("myCanvas");
  var ctx = canvas.getContext("2d");
  ctx.fillStyle = "#FF0000";
  ctx.fillRect(0, 0, 150, 75);
</script>

25. How do you create a progress bar in HTML?

Use the <progress> tag to create a progress bar in HTML.

Here’s an example of how to create a progress bar.

<progress value="50" max="100"></progress>

26. How do you create an audio player in HTML?

Use the <audio> tag to create an audio player in HTML.

Here’s an example:

<audio src="audio.mp3" controls>
  Your browser does not support the audio tag.
</audio>

27. How do you create a tooltip in HTML?

Use the title attribute to create a tooltip in HTML.

Here’s an example of how to add a tooltip.

<span title="This is a tooltip">Hover over me</span>

28. How do you create a responsive image in HTML?

Use the <img> tag with the srcset attribute to create a responsive image in HTML.

Here’s an example:

<img src="image.jpg"
     srcset="image-400.jpg 400w,
             image-800.jpg 800w,
             image-1200.jpg 1200w"
     sizes="(max-width: 400px) 400px,
            (max-width: 800px) 800px,
            1200px"
     alt="Description of the image">

29. How do you create a hyperlink in HTML?

Use the <a> tag with the href attribute to create a hyperlink in HTML.

Here’s an example:

<a href="https://www.example.com">Link text</a>

30. How do you create an unordered list in HTML?

Use the <ul> tag to create an unordered list in HTML, and the <li> tag to specify list items.

Here’s an example:

<ul>
  <li>Item 1</li>
  <li>Item 2</li>
  <li>Item 3</li>
</ul>

31. How do you create an ordered list in HTML?

Use the <ol> tag to create an ordered list in HTML, and the <li> tag to specify list items.

Here’s an example:

<ol>
  <li>Item 1</li>
  <li>Item 2</li>
  <li>Item 3</li>
</ol>

32. How do you create a definition list in HTML?

Use the <dl> tag to create a definition list in HTML, the <dt> tag to specify terms, and the <dd> tag to specify definitions.

Here’s an example:

<dl>
  <dt>Term 1</dt>
  <dd>Definition 1</dd>
  <dt>Term 2</dt>
  <dd>Definition 2</dd>
</dl>

33. How do you create a dropdown menu in HTML?

Use the <select> tag to create a dropdown menu in HTML, and the <option> tag to specify options.

Here’s an example:

<select>
  <option value="option1">Option 1</option>
  <option value="option2">Option 2</option>
  <option value="option3">Option 3</option>
</select>

34. How do you create an audio player in HTML?

Use the <audio> tag to create an audio player in HTML.

Here’s an example:

<audio src="audio.mp3" controls>
  Your browser does not support the audio tag.
</audio>

35. How do you create a form in HTML?

Use the <form> tag to create a form in HTML, and use various input tags to create form elements.

Here’s an example:

<form>
  <label for="name">Name:</label>
  <input type="text" id="name" name="name" required>

  <label for="email">Email:</label>
  <input type="email" id="email" name="email" required>

  <label for="password">Password:</label>
  <input type="password" id="password" name="password" required>

  <input type="submit" value="Submit">
</form>

36. How do you create a progress bar in HTML?

Use the <progress> tag to create a progress bar in HTML.

Here’s an example:

<progress value="70" max="100"></progress>

37. How do you create a meter in HTML?

Use the <meter> tag to create a meter in HTML.

Here’s an example:

<meter value="70" min="0" max="100"></meter>

38. How do you create a datalist in HTML?

Use the <datalist> tag to create a datalist in HTML, and use the <option> tag to specify options.

Here’s an example:

<input list="fruits">

<datalist id="fruits">
  <option value="Apple">
  <option value="Banana">
  <option value="Cherry">
</datalist>

39. How do you create a range slider in HTML?

Use the <input> tag with the type="range" attribute to create a range slider in HTML.

Here’s an example:

<input type="range" min="0" max="100" value="50">

40. How do you create a color picker in HTML?

Use the <input> tag with the type="color" attribute to create a color picker in HTML.

Here’s an example:

<input type="color" value="#ff0000">

41. How do you create a date picker in HTML?

Use the <input> tag with the type="date" attribute to create a date picker in HTML.

Here’s an example:

<input type="date" value="2023-03-17">

In conclusion, HTML5 is a fundamental part of web development, and a thorough understanding of its concepts is crucial for any web developer.

Knowing the top interview questions on HTML5 can help you prepare for your next job interview and make you stand out as a candidate.

Remember to practice your answers and be confident in your knowledge.

Additionally, keep in mind that interviews are not just about the answers but also about your communication skills, problem-solving abilities, and overall demeanor.

So, stay calm, be positive, and showcase your passion for HTML5 and web development. With the right preparation, you can impress your interviewer and land your dream job in web development.