Top 10 Essential Interview Questions On Web Development in 2025

1. Define the API and its importance in web development API stands for Application Programming Interface. With the help of APIs, multiple applications communicate with each other effectively. It plays a crucial role in web development. If you are a beginner, you can easily add multiple features to your web application. 2. What is AJAX in web development? AJAX, also known as Asynchronous JavaScript and XML, helps you build fast and interactive web applications. Suppose you add an AJAX form to your website. When a user puts data in the form, the data will be sent and received by the server without dynamically loading the web page. 3. What is the DOM structure, and how does it work? The DOM, or Document Object Model, is the total structure of a web page. You can easily change the content and styles of the web page using the DOM. 4. What are the key principles of RESTful API? Restful API is a set of rules that help two or more websites or servers communicate with each other. For example, if you click an element on a website, the request will be sent to the server, and the server will provide you with the right response. 5. Describe the importance of a CSS preprocessor like Sass or Less CSS preprocessor is an important concept in web development. It is used to redefine variables. You can make your CSS writing easy and effective using Sass or Less. With the help of a CSS processor, you can define functions in CSS code to calculate and manipulate data. 6. Explain the differences between responsive and adaptive web design A responsive website means it changes its layout based on the screen size. In this case, the HTML and CSS codes remain the same on each device. The adaptive web design is slightly different from the responsive web design. AN adaptive website has multiple versions optimized for different screen sizes. For example, if you open nytletterboxedsolver.com, you will see how the website perfectly fits on mobile, tab, and desktop screens. You can check daily NYTimes Letter Boxed answers without any convenience. 7. What is the definition of Lazy Loading and its benefits in web development? The concept of Lazy Loading is crucial in both web development and SEO. If you enable Lazy Loading, the images, videos, or other media files will be loaded only when they are viewed. It significantly increases the website speed. 8. Explain the server-less architecture in web development Suppose you build a website or a web application and upload it to a server that you do not manage. Many cloud companies are available that provide this type of solution. 9. What are web sockets? The function of WebSockets is to keep the communication bidirectional between a browser and a server over a single connection. If you develop web applications related to live chat or online gaming, WebSockets will be useful. 10. How do web components optimize websites? If you want to create a feature-rich website, you can use various web components in your website. These components can be buttons or forms.

Apr 26, 2025 - 14:20

Top 10 Essential Interview Questions On Web Development in 2025

1. Define the API and its importance in web development

API stands for Application Programming Interface. With the help of APIs, multiple applications communicate with each other effectively. It plays a crucial role in web development. If you are a beginner, you can easily add multiple features to your web application.

2. What is AJAX in web development?

AJAX, also known as Asynchronous JavaScript and XML, helps you build fast and interactive web applications. Suppose you add an AJAX form to your website. When a user puts data in the form, the data will be sent and received by the server without dynamically loading the web page.

3. What is the DOM structure, and how does it work?

The DOM, or Document Object Model, is the total structure of a web page. You can easily change the content and styles of the web page using the DOM.

4. What are the key principles of RESTful API?

Restful API is a set of rules that help two or more websites or servers communicate with each other. For example, if you click an element on a website, the request will be sent to the server, and the server will provide you with the right response.

5. Describe the importance of a CSS preprocessor like Sass or Less

CSS preprocessor is an important concept in web development. It is used to redefine variables. You can make your CSS writing easy and effective using Sass or Less. With the help of a CSS processor, you can define functions in CSS code to calculate and manipulate data.

6. Explain the differences between responsive and adaptive web design

A responsive website means it changes its layout based on the screen size. In this case, the HTML and CSS codes remain the same on each device. The adaptive web design is slightly different from the responsive web design. AN adaptive website has multiple versions optimized for different screen sizes. For example, if you open nytletterboxedsolver.com, you will see how the website perfectly fits on mobile, tab, and desktop screens. You can check daily NYTimes Letter Boxed answers without any convenience.

7. What is the definition of Lazy Loading and its benefits in web development?

The concept of Lazy Loading is crucial in both web development and SEO. If you enable Lazy Loading, the images, videos, or other media files will be loaded only when they are viewed. It significantly increases the website speed.

8. Explain the server-less architecture in web development

Suppose you build a website or a web application and upload it to a server that you do not manage. Many cloud companies are available that provide this type of solution.

9. What are web sockets?

The function of WebSockets is to keep the communication bidirectional between a browser and a server over a single connection. If you develop web applications related to live chat or online gaming, WebSockets will be useful.

10. How do web components optimize websites?

If you want to create a feature-rich website, you can use various web components in your website. These components can be buttons or forms.