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HTML5

100 HTML5 interview questions

Only coding challenges
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HTML Basics


  • 1.

    What does HTML stand for and what is its purpose?

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  • 2.

    Describe the basic structure of an HTML document.

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  • 3.

    What do DOCTYPE and html lang attributes do?

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  • 4.

    What is the difference between head and body tags?

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  • 5.

    Can you explain the purpose of meta tags in HTML?

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  • 6.

    How do you link a CSS file to an HTML document?

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  • 7.

    How do you link a JavaScript file to an HTML document?

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  • 8.

    How do you add a comment in HTML and why would you use them?

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  • 9.

    How do you serve your page in multiple languages?

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  • 10.

    What are data-* attributes and when should they be used?

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Text Formatting in HTML


  • 11.

    What is the difference between b and strong tags?

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  • 12.

    When would you use em over i, and vice versa?

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  • 13.

    What is the purpose of small, s, and mark tags?

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  • 14.

    What are semantic HTML tags and why are they important?

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  • 15.

    How do you create a paragraph or a line break in HTML?

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Links and Navigation


  • 16.

    How do you create a hyperlink in HTML?

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  • 17.

    What is the difference between relative and absolute URLs?

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  • 18.

    How can you open a link in a new tab?

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  • 19.

    How do you create an anchor to jump to a specific part of the page?

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  • 20.

    How do you link to a downloadable file in HTML?

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Images and Objects


  • 21.

    How do you embed images in an HTML page?

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  • 22.

    What is the importance of the alt attribute for images?

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  • 23.

    What image formats are supported by web browsers?

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  • 24.

    How do you create image maps in HTML?

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  • 25.

    What is the difference between svg and canvas elements?

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Lists


  • 26.

    What are the different types of lists available in HTML?

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  • 27.

    How do you create ordered, unordered, and description lists in HTML?

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  • 28.

    Can lists be nested in HTML? If so, how?

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  • 29.

    What attributes can you use with lists to modify their appearance or behavior?

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Forms and Input Elements


  • 30.

    What are HTML forms and how do you create one?

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  • 31.

    Describe the different form input types in HTML5.

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  • 32.

    How do you make form inputs required?

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  • 33.

    What is the purpose of the label element in forms?

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  • 34.

    How do you group form inputs and why would you do this?

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HTML5 Features


  • 35.

    What is new in HTML5 compared to previous versions?

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  • 36.

    How do you create a section on a webpage using HTML5 semantic elements?

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  • 37.

    What is the role of the article element in HTML5?

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  • 38.

    Can you explain the use of the nav and aside elements in HTML5?

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  • 39.

    How do you use the figure and figcaption elements?

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Tables


  • 40.

    How do you create a table in HTML?

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  • 41.

    What are thead, tbody, and tfoot in a table?

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  • 42.

    What is a colspan and rowspan?

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  • 43.

    How do you make a table accessible?

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  • 44.

    How can tables be made responsive?

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Media in HTML


  • 45.

    How do you add audio and video to an HTML document?

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  • 46.

    What are the attributes of the video and audio elements?

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  • 47.

    How do you provide subtitles or captions for video content in HTML?

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  • 48.

    What’s the difference between embedding and linking media?

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Responsive Design and Media Queries


  • 49.

    What is a viewport and how can you set it?

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  • 50.

    Can you describe the use of media queries in HTML?

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  • 51.

    How do you create responsive images with different resolutions for different devices?

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  • 52.

    What is responsive web design?

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  • 53.

    How do flexbox and grids help in creating responsive layouts?

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Accessibility


  • 54.

    What is accessibility and why is it important in web development?

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  • 55.

    How do you make a website accessible?

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  • 56.

    What are ARIA roles and how do you use them?

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  • 57.

    Explain how to use the tabindex attribute.

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  • 58.

    How do you ensure your images are accessible?

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Linking and Navigation Techniques


  • 59.

    How do you make a navigation bar in HTML?

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  • 60.

    What’s the significance of breadcrumb navigation?

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  • 61.

    How do you create a dropdown menu in HTML?

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  • 62.

    Explain the use of the target attribute in a link.

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  • 63.

    How do you create a slidedown menu?

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Advanced HTML Technologies


  • 64.

    What are Web Components and how are they used?

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  • 65.

    What is Shadow DOM and how do you use it?

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  • 66.

    How do you create a custom HTML element?

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  • 67.

    Explain HTML templates and their use cases.

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  • 68.

    How do you use server-sent events?

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SEO and HTML


  • 69.

    How do you optimize HTML for search engines?

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  • 70.

    What is semantic HTML and how does it relate to SEO?

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  • 71.

    Explain the significance of heading tags for SEO.

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  • 72.

    How do structured data and schemas enhance SEO?

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  • 73.

    What are the best practices for using HTML with SEO?

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HTML APIs


  • 74.

    What is the Geolocation API and how is it used?

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  • 75.

    How do you utilize local storage and session storage in HTML?

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  • 76.

    Can you describe the use of the Drag and Drop API?

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  • 77.

    What is the Fullscreen API and why would you use it?

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Internationalization


  • 78.

    How do you handle character encoding in HTML?

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  • 79.

    What is the lang attribute and its importance in HTML?

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  • 80.

    How do you accommodate left-to-right and right-to-left language support in HTML?

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HTML and Web Development Tools


  • 81.

    How do you validate HTML?

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  • 82.

    What are the benefits of using an HTML preprocessor like Pug (Jade)?

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  • 83.

    How does a templating engine work with HTML?

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  • 84.

    What are browser developer tools, and how do you use them with HTML?

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HTML Best Practices


  • 85.

    What are some common bad practices in HTML?

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  • 86.

    How can you ensure that your HTML code follows best practices?

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  • 87.

    What are the benefits of minifying HTML documents?

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  • 88.

    How do you optimize the loading time of an HTML page?

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HTML Frameworks and Libraries


  • 89.

    What are some popular CSS frameworks that can be integrated with HTML?

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  • 90.

    How do frameworks like Bootstrap simplify HTML development?

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  • 91.

    Can you name some JavaScript libraries that enhance HTML interactivity?

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Advanced HTML Topics


  • 92.

    What are data visualizations in HTML and how can they be implemented?

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  • 93.

    Can you explain how progressive enhancement is applied in HTML?

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  • 94.

    How are HTML, CSS, and JavaScript interconnected in web development?

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  • 95.

    Discuss the importance of documentation in HTML.

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HTML 5.1, 5.2, and Beyond


  • 96.

    What updates were introduced in HTML 5.1 and 5.2?

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  • 97.

    What future updates do you see coming for HTML?

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  • 98.

    How does HTML continue to evolve with web standards?

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  • 99.

    What is the Living Standard and how does HTML adhere to it?

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HTML Challenges and Real-world Scenarios


  • 100.

    How do you handle multiple browser support and compatibility issues with HTML?

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