Top 50 HTML Interview Questions Answer for freshers
Introduction: HTML5 is the latest and most powerful version of the Hypertext Markup Language, and it’s essential for anyone aiming to enter the field of web development.
1. What is HTML5?
HTML5 is the latest version of the HyperText Markup Language used to structure content on the web.
2. What are the new features of HTML5?
New features include semantic elements, audio/video tags, the canvas element, and improved forms.
3. What are semantic elements in HTML5?
Semantic elements provide meaning to the content. Examples are <header>, <footer>, <article>, and <section>.
4. What is the difference between HTML4 and HTML5?
HTML5 provides new elements, APIs, and better support for multimedia, while HTML4 lacks these features.
5. What are the <audio> and <video> tags in HTML5?
These tags allow you to embed audio and video content directly into web pages without needing third-party plugins.
6. What is the <canvas> element in HTML5?
The <canvas> element is used to draw graphics on the fly using JavaScript.
7. What is the purpose of the localStorage feature in HTML5?
localStorage stores data on the client’s browser with no expiration time, useful for saving user preferences.
8. What is sessionStorage in HTML5?
sessionStorage stores data for the duration of the page session and is cleared when the browser is closed.
9. What is the <main> element?
The <main> element represents the primary content of a document.
10. What is the difference between <div> and <section>?
<div> is a generic container, while <section> defines a thematic grouping of content.
11. What is the <mark> element used for?
The <mark> element is used to highlight text to make it stand out.
12. What is the <progress> element in HTML5?
The <progress> element is used to represent the progress of a task.
13. How do you embed a YouTube video in HTML5?
Use the <iframe> tag with the video URL: <iframe src="https://www.youtube.com/embed/VIDEO_ID"></iframe>.
14. What is the <datalist> tag?
The <datalist> element provides a set of options for an <input> element.
15. What is the <output> tag used for?
The <output> element is used to represent the result of a calculation or user action.
16. How can you create a form using HTML5?
Forms in HTML5 can be created using the <form> element, with inputs like <input> and <textarea>.
17. What is the placeholder attribute in HTML5?
The placeholder attribute provides a short hint within the <input> element before the user enters a value.
18. What is the required attribute?
The required attribute ensures that a field must be filled before submitting the form.
19. How do you create a responsive layout in HTML5?
Use CSS media queries and flexible layouts like flexbox or grid to ensure the site adapts to different screen sizes.
20. What is the difference between <header> and <nav>?
<header> represents introductory content, while <nav> defines navigation links.
21. What is the <article> element used for?
The <article> element defines a self-contained, independent piece of content.
22. What is the <footer> element used for?
The <footer> element represents the footer content of a page or section.
23. What is the purpose of <aside> in HTML5?
<aside> is used for content related to the surrounding content but considered separate, like sidebars.
24. What are the input types introduced in HTML5?
HTML5 introduced input types like email, url, date, tel, and more.
25. How do you make a website mobile-friendly in HTML5?
Use the <meta name="viewport"> tag and responsive CSS techniques to ensure the site adapts to different screen sizes.
26. What is the <details> tag in HTML5?
The <details> element is used to create a disclosure widget from which the user can view additional information.
27. What is the <summary> tag?
The <summary> element is used as a heading or label for a <details> element.
28. How do you create a link in HTML5?
Use the <a> tag: <a href="URL">Link Text</a>.
29. What is the <figure> element?
The <figure> element represents content that is referenced from the main content, like images and diagrams.
30. What is the <figcaption> element used for?
The <figcaption> element provides a caption or explanation for the <figure> content.
31. What is the <input type="email"> used for?
The <input type="email"> ensures that the entered text is validated as an email address.
32. What is the <input type="date"> used for?
The <input type="date"> allows the user to select a date from a date picker.
33. How do you create an ordered list in HTML5?
Use the <ol> tag for an ordered list and <li> for each list item.
34. What is the <iframe> tag used for?
The <iframe> tag is used to embed another HTML document within the current document.
35. How do you include external CSS in HTML5?
Use the <link> tag: <link rel="stylesheet" href="styles.css">.
36. How do you create a comment in HTML5?
Use the syntax: <!-- Your comment here -->.
37. What is the <meta> tag used for?
The <meta> tag provides metadata about the document, like charset or author.
38. How do you embed a font in HTML5?
You can embed a font using the <link> tag to external stylesheets or @font-face in CSS.
39. What are data attributes in HTML5?
Data attributes are custom attributes used to store data private to the page or application.
40. What is the <svg> tag used for?
The <svg> tag is used to embed scalable vector graphics directly in the HTML document.
41. What is the <wbr> tag used for?
The <wbr> tag defines a possible line break opportunity in long words or phrases.
42. What is the <del> tag used for?
The <del> tag represents deleted text that has been removed from a document.
43. How do you define a tooltip in HTML5?
You can define a tooltip using the title attribute on any element.
44. What is the <input type="file"> used for?
The <input type="file"> allows the user to select files from their device for uploading.
45. How can you add a favicon to a website in HTML5?
Use the <link rel="icon"> tag in the <head> section: <link rel="icon" href="favicon.ico">.
46. What is the <base> tag used for?
The <base> tag sets a base URL for relative URLs in a document.
47. What is accept-charset in the <form> element?
The accept-charset attribute specifies the character encoding for the form submission.
48. What is the <keygen> tag used for?
The <keygen> tag is used for generating a secure key pair for form submissions.
49. How do you create a table in HTML5?
Use the <table> element with rows (<tr>), headers (<th>), and cells (<td>).
50. How do you align text in HTML5?
Use the align attribute in older tags or use CSS like text-align: center;.