HTML Interview Questions & Answers

HTML (HyperText Markup Language) is the foundation of web development. Whether you are a beginner or an experienced developer, preparing for an HTML interview is crucial. Below is a list of commonly asked HTML interview questions and answers to help you ace your interview.

Basic HTML Interview Questions

1. What is HTML?

HTML stands for HyperText Markup Language. It is used to structure and display content on the web. HTML consists of elements and tags that define the layout and content of a web page.

2. What are the different types of HTML elements?

• Block-level elements: div, p, h1 to h6, section
• Inline elements: span, a, strong, em
• Empty elements: br, img, hr, input

3. What is the difference between HTML and HTML5?

HTML5 is the latest version of HTML that includes new features such as:

• New semantic elements like article, section, nav, and aside
• Native support for audio and video through audio and video elements
• Better form validation with new input types like email, date, and url
• Improved support for mobile devices

Intermediate HTML Interview Questions

4. What is the difference between inline, block, and inline-block elements?

• Inline: Does not start on a new line and only takes up as much width as necessary (e.g., span, a).
• Block: Starts on a new line and takes up the full width available (e.g., div, p).
• Inline-block: Behaves like an inline element but allows setting width and height.

5. What is the purpose of the alt attribute in the img tag?

The alt attribute provides alternative text for an image if it cannot be displayed. It also improves accessibility for screen readers and enhances SEO.

6. What is the difference between id and class attributes in HTML?

• id: A unique identifier for a single element, cannot be used multiple times on the same page.
• class: Can be applied to multiple elements to style or manipulate them collectively.

7. What are self-closing tags in HTML?

Self-closing tags, also known as void elements, do not require a closing tag. Examples include br, img, hr, and input.

8. How do you create a hyperlink in HTML?

You can create a hyperlink using the a tag, specifying the href attribute with the desired URL.

Advanced HTML Interview Questions

9. What are data attributes in HTML?

Data attributes (data-*) allow custom data to be stored in HTML elements. They help store extra information without affecting the document structure.

10. What is the purpose of the meta tag?

The meta tag provides metadata about a web page, such as character encoding, viewport settings, and SEO-related information.

11. What is the difference between em and strong tags?

• em: Emphasizes text (typically displayed in italics).
• strong: Indicates strong importance (typically displayed in bold).

12. How can you create a responsive webpage using HTML?

• Use the meta tag with viewport settings to adjust scaling.
• Utilize CSS media queries to adjust styles based on screen sizes.
• Use a flexible grid layout with percentage-based widths.

13. What is the difference between relative, absolute, and fixed positioning in HTML?

• Relative: Positions the element relative to its normal position.
• Absolute: Positions the element relative to its nearest positioned ancestor.
• Fixed: Positions the element relative to the viewport and does not move when scrolling.

14. What is lazy loading in HTML?

Lazy loading is a technique used to defer the loading of images and other media until they are needed. This improves page speed.

15. What are HTML5 Web Storage APIs?

HTML5 provides two types of web storage:

• Local Storage: Stores data with no expiration.
• Session Storage: Stores data for a single session (data is lost when the browser is closed).

Conclusion

These HTML interview questions and answers will help you prepare for your next web development interview. Understanding these concepts will give you an edge and boost your confidence.

Stay updated with LetsUpdateSkills for more web development tutorials and interview preparation tips!