16. JavaScript:
Score: 8
Qualitative Assessment: Good
Description: Ishan demonstrated strong knowledge and practical experience with JavaScript.

17. DOM manipulation and event handling:
Score: 7
Qualitative Assessment: Good
Description: Ishan likely has experience with DOM manipulation and event handling through his work with React and Next.js.

18. HTML5:
Score: 7
Qualitative Assessment: Good
Description: Ishan's front-end development experience suggests a good understanding of HTML5.

19. Responsive design principles:
Score: 7
Qualitative Assessment: Good
Description: Ishan's experience with front-end frameworks implies knowledge of responsive design principles.

20. Version control systems (Git):
Score: 7
Qualitative Assessment: Good
Description: Ishan mentioned using Git, indicating he has experience with version control systems.