Top 10 Web Developer Interview Questions

The tech landscape is ever-changing. Trending technology today is forgotten tomorrow. Web development is one of the very few technologies immune to this trend. As long as the internet exists, there will always be a need for web developers. Companies know this, that is why web development interviews are so challenging, and it is important to prepare well. 

To help you ace your next interview, here are some of the most asked interview questions for web developers. We’ll cover what questions are asked and how to answer them!

Web Developer Interview Question

Here are the most asked questions with answers:

1) What Are the Different Types of Web Development?

Web development is a broad term with various disciplines and technologies, including developing websites, web applications, and web services. Web development has two main components.

1. Front-end Development - Creating a website or application's user interface
2. Back-end Development - Back-end web development is the development of the server-side components of a website.

Other types of web development include

• Mobile web development
• E-commerce development,
• Content Management Systems (CMS) 

2) What is the Difference Between Front-End and Back-End Development?

3) What Are the Different Programming Languages Used in Web Development?

• HTML
• CSS
• JavaScript
• PHP
• Python
• Ruby

4) What is Webpack?

Webpack is a static module bundler. It groups JavaScript applications with dependencies to create static assets symbolising the modules.

Webpack works by taking in all of the source code from your application, including third-party libraries and frameworks, and creating bundles of code that can be used in the browser. It also lets you optimise the code and combine it into a single file for faster loading. 

5) Explain HTML5 Web Storage.

HTML5 web storage can store data locally on a user's web browser. Instead of sending data back and forth between the server and the browser. Web Storage is more secure than traditional cookies, as it does not send data back and forth. Web Storage is divided into two separate mechanisms:

1. SessionStorage
2. LocalStorage 

6) Define NPM (Node Package Manager)

NPM is an acronym for Node Package Manager. It installs, updates, and manages JavaScript (JS) and Node packages. JS. NPM provides extensive API, allowing developers to access and manage packages programmatically.

7) What Are the Different Testing and Debugging Tools Used in Web Development?

• Selenium
• HP QuickTest Professional
• Apache JMeter
• WebPageTest
• AppScan

8) What do you mean by CDN (Content Delivery Network) in jQuery?

jQuery is an open-source JavaScript library specially designed for event handling,  animation, and HTML document traversing in an HTML doc. It does this using CSS and Ajax.  

CDN or Content Delivery Network is a system of distributed servers, it is primarily used to provide scalable performance and service distribution to the users of the website. In jQuery, a CDN provides a faster and more reliable way to access the jQuery library without downloading the jQuery file on the website's file server. 

9) What is the Purpose of Closures in JavaScript? 

The purpose of closures in JavaScript is to create a private scope for variables and functions. Closures allow developers to create functions that can access variables outside their scope. This is useful for creating functions that can be used in multiple contexts without redefining the same variables each time.

Closures also allow developers to create functions that can remember the state of the variables when they were first called. This is useful for creating functions that can be used in asynchronous programming. 

10) What is Long Polling?  

Long polling is a technique used for client-server communication in which the client sends a request to the server, and the server holds the request open until an event occurs or a timeout is reached. It is an alternative to the traditional polling technique, where the client sends a request to the server regularly to check for new data. Long polling allows the server to push data to the client as soon as it is available, rather than the client having to request it. 

Conclusion

The web development job market is highly competitive. It requires a wide range of skills and knowledge. As such, it is important to prepare for your web development interview by familiarising yourself with the top 10 web development interview questions. 

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