HTML Interview Questions

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Here you get a free HTML Interview Question which helps you to Give Correct Answer of the Question in the Interview. It also helps you for you college exams Preparation.

Basics of HTML

  1. What are the main differences between <section>, <article>, and <div> tags in HTML5?
  2. Explain the difference between block-level elements and inline elements with examples.
  3. How does the <meta charset="UTF-8"> tag affect the rendering of an HTML page?
  4. What is the purpose of the <!DOCTYPE> declaration, and what happens if it’s omitted?
  5. Why are semantic elements preferred over non-semantic elements in HTML? Provide examples.
  6. Explain the difference between the <head> and <body> sections in an HTML document.
  7. What is the purpose of the <noscript> tag, and how does it work?
  8. Can the <html> element have any attributes? If yes, name them and describe their usage.
  9. How do the title and alt attributes differ in terms of accessibility and SEO?
  10. What is the purpose of the <template> tag, and how can it be used dynamically?

Forms and Input Elements

  1. How does the action attribute in a <form> tag work, and what are its default behaviors?
  2. What is the difference between method="GET" and method="POST" in a form submission?
  3. How does the <input type="file"> element work, and how can you restrict file types?
  4. Explain the purpose of the novalidate attribute in a <form> tag.
  5. How can you use the pattern attribute in an input field to validate user data?
  6. What is the use of the <datalist> tag, and how does it enhance user input?
  7. How does the required attribute affect form submissions? Provide an example.
  8. What is the difference between <textarea> and <input type="text">?
  9. Explain the autocomplete attribute and how it can be used to improve user experience.
  10. How can you group form elements using the <fieldset> and <legend> tags?
  11. Describe the step attribute in <input> elements with examples.
  12. How can you disable form controls, and what is the difference between readonly and disabled?
  13. What is the purpose of the form attribute in an input element?
  14. How do you create a dropdown menu using the <select> and <option> tags?
  15. How can you create custom validation error messages using the oninvalid event?
  16. What are the benefits of using <output> for displaying calculated data?
  17. How does input type="hidden" differ from other input types?
  18. What are the advantages of using <button> over <input type="submit">?
  19. How can the formaction attribute in a <button> tag be used dynamically?
  20. What role does the multiple attribute play in <input> elements?

HTML Media

  1. How can you embed audio in a webpage using the <audio> tag? Provide examples with attributes.
  2. Explain the difference between <audio> and <video> tags in HTML.
  3. How can you specify multiple sources for a <video> element?
  4. Describe the preload attribute in media tags and how it affects performance.
  5. How can you add captions to a video using the <track> tag?
  6. What are the differences between the autoplay, loop, and controls attributes in media tags?
  7. How can you make an embedded video responsive using HTML and CSS?
  8. What is the purpose of the muted attribute in the <video> tag?
  9. How can you create a custom video player interface using HTML5?
  10. What are the advantages of using <picture> and <source> elements for responsive images?

HTML5 APIs

  1. How does the Geolocation API work in an HTML document? Provide examples.
  2. Explain the purpose of the <canvas> tag and how it can be used with JavaScript.
  3. What is the Web Storage API, and how do localStorage and sessionStorage differ?
  4. How can the Drag and Drop API enhance user interactivity in an HTML document?
  5. Describe how the <progress> and <meter> tags work in HTML.
  6. How can you use the <details> and <summary> tags for collapsible content?
  7. What is the purpose of the Web Workers API in HTML?
  8. How does the <output> element integrate with JavaScript for displaying dynamic data?
  9. Explain the concept of data-* attributes and how they are used in modern HTML.
  10. How can the <time> tag improve the semantics of time-related data in an HTML document?

Accessibility

  1. Why is it important to use aria-label and aria-labelledby attributes?
  2. How do <header> and <footer> tags contribute to accessibility?
  3. What role does the tabindex attribute play in accessibility?
  4. How can you make an HTML table accessible for screen readers?
  5. Explain the purpose of the role attribute in HTML. Provide examples.
  6. How does the aria-live attribute improve accessibility in dynamic web applications?
  7. What is the difference between using alt attributes on images and the title attribute?
  8. How can landmarks like <main>, <nav>, and <aside> help assistive technologies?
  9. What are the best practices for creating accessible forms?
  10. Explain how to create keyboard-navigable menus using HTML and ARIA roles.

SEO and Performance

  1. What is the difference between canonical and noindex meta tags?
  2. How do heading tags (<h1> to <h6>) affect SEO and page structure?
  3. How can the <link rel="alternate"> tag improve SEO for multilingual sites?
  4. What is lazy loading, and how can you implement it for images in HTML?
  5. How does the <meta name="viewport"> tag optimize a page for mobile devices?
  6. What is the purpose of Open Graph meta tags in an HTML document?
  7. Explain the impact of using inline vs. external CSS and JavaScript on page performance.
  8. How can the <base> tag help with resolving relative URLs?
  9. What are the benefits of using the <script defer> and <script async> attributes?
  10. How can semantic HTML improve both accessibility and SEO?

Tables

  1. How does the <thead>, <tbody>, and <tfoot> structure improve table readability?
  2. What is the difference between the colspan and rowspan attributes in a table?
  3. How can you use the <caption> tag to enhance the semantics of a table?
  4. What is the purpose of the scope attribute in <th> elements?
  5. How can you create a table with a fixed header using HTML and CSS?
  6. What are the best practices for making tables responsive?
  7. How does the <col> tag help in styling tables?
  8. What is the difference between <table> and <figure> for presenting data?
  9. How can you merge table cells horizontally and vertically using HTML?
  10. How can you optimize large tables for better performance?

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