Front End Interview Questions [2024]

Welcome to the Interview Questions repository! Here you'll find a comprehensive list of interview questions covering various topics related to web development including HTML, CSS, JavaScript, and React.

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HTML

Welcome to the HTML Interview Questions repository! Here you'll find a comprehensive list of HTML questions covering basic to advanced topics, including Emmet, forms, semantic HTML, and SEO basics.

Basics:

1. What does HTML stand for?
2. What is the purpose of HTML?
3. What are the basic structure tags of an HTML document?
4. Explain the difference between HTML elements and HTML tags.
5. What is the <!DOCTYPE> declaration?
6. How do you create a comment in HTML?
7. What are empty elements in HTML?
8. Explain the difference between <div> and <span>.
9. What is the purpose of the <meta> tag?
10. How do you create a hyperlink in HTML?

Emmet:

11. What is Emmet?
12. How do you expand Emmet abbreviations?
13. Provide an example of an Emmet abbreviation for creating a div with a class of "container" and two nested divs with classes "header" and "main".

Forms:

14. What is the purpose of HTML forms?
15. How do you create a form in HTML?
16. Explain the attributes of the tag.
17. What are form controls in HTML?
18. Explain the difference between the and <textarea> elements.
19. How do you create a drop-down list in HTML?
20. Explain the purpose of the required attribute in form elements.
21. What is the difference between the "GET" and "POST" methods in form submission?

Semantic HTML:

22. What is semantic HTML?
23. Provide examples of semantic HTML tags.
24. Why is semantic HTML important for accessibility and SEO?
25. Explain the purpose of the <header>, <footer>, <nav>, and <article> tags.
26. How does semantic HTML improve website structure and readability?

SEO Basics:

27. What is SEO?
28. How does HTML structure affect SEO?
29. Explain the importance of using descriptive <title> tags.
30. What is the purpose of the tag?
31. How do you create a proper HTML hierarchy for SEO?
32. Explain the significance of using alt attributes in tags for SEO.
33. How can structured data markup benefit SEO?

Advanced:

34. What are HTML5 semantic elements?
35. Explain the difference between HTML and XHTML.
36. How do you embed audio and video in HTML?
37. What is the purpose of the element?
38. How do you embed SVG (Scalable Vector Graphics) in HTML?
39. What is the purpose of the <iframe> element?
40. Explain the concept of web accessibility and how HTML supports it.
41. How can you implement responsive design using HTML?
42. What is the purpose of the "aria-" attributes in HTML?
43. How do you use the <details> and <summary> elements in HTML?
44. Explain the purpose of the element and its attributes.
45. What is the purpose of the and elements?
46. How do you create a custom data attribute in HTML?

Miscellaneous:

47. What is the purpose of the <script> tag in HTML?
48. How do you embed external scripts in HTML?
49. Explain the difference between inline and external CSS.
50. What is the purpose of the tag in HTML?
51. How do you embed fonts in HTML?
52. What is the purpose of the <style> tag in HTML?
53. How do you create a horizontal line in HTML?
54. Explain the purpose of the tag.
55. How do you create a table in HTML?
56. What are the different types of lists in HTML?
57. How do you create a definition list in HTML?
58. Explain the purpose of the and tags.

HTML5 APIs:

59. What are HTML5 Web Storage APIs?
60. Explain the difference between localStorage and sessionStorage.
61. What is the Geolocation API in HTML5?
62. How do you use the Canvas API in HTML5?
63. What is the purpose of the Drag and Drop API in HTML5?
64. Explain the concept of Web Workers in HTML5.

Advanced CSS with HTML:

65. How do you link CSS to HTML?
66. What is the CSS box model?
67. Explain the purpose of CSS Flexbox and Grid layouts.
68. How do you create CSS animations in HTML?
69. What is the purpose of CSS preprocessors like Sass and LESS?
70. How can you use media queries in HTML to create responsive designs?
71. What are CSS frameworks and how do they benefit HTML development?

SEO Optimization:

72. How can you optimize images for SEO?
73. What is the purpose of a sitemap.xml file in SEO?
74. Explain the concept of canonical URLs and their importance in SEO.
75. How do you create SEO-friendly URLs in HTML?

Feel free to use these questions for interviews, study, or reference purposes. Good luck!