Top Web Developer Interview Questions with Example Answers [2022]

Prepare for your Web Developer interview by going through these most asked Web Developer interview questions. Additionally, get access to sample answers and interviewer's expectations.

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  • Question: How do you ensure continuity and longevity in web development processes after handing over to your clients?
  • Question Overview: A web developer should be able to take ownership of their work and ensure that the site is running smoothly. This question will help you determine if a candidate is aware of the importance of documentation and how they plan to support the team after handing over to the client.

    Sample Answer: I always make sure that I have a thorough understanding of the project goals, as well as what the client expects from the final product. I then create a detailed outline of how I will achieve these goals, including a timeline and a list of tasks that need to be completed. I also create a detailed documentation of all assets used, including images and code. This ensures that if I am not available, another web developer can easily pick up where I left off.

      What the interviewer is looking for:
    • - How they plan to support the client
    • - How they plan to support the team
    • - How they plan to maintain documentation

  • Question: What would you do if you were given the task of redeveloping an existing website?
  • Question Overview: A web developer should be able to take an existing website and redesign it to meet the needs of the business. This question will help you understand how a candidate plans to approach a redesign and what they will do to ensure the site is user-friendly.

    Sample Answer: I would first analyze the existing site’s traffic and determine if there are any issues with functionality or design. If there are, I would redesign the site to fix those issues and make it more user-friendly. I would also ensure that the site is optimized for mobile devices, as mobile traffic has increased by over 50% in the last year.

      What the interviewer is looking for:
    • - What they will do
    • - How they will approach the task
    • - What they will do to ensure the site is user-friendly

  • Question: What frameworks have you worked with?
  • Question Overview: A web developer should have a working knowledge of the most popular frameworks and how they can be used to create a website. This question will help you determine if a candidate has the experience and knowledge to successfully complete your project.

    Sample Answer: I have worked with Ruby on Rails, Django and Laravel. I enjoy using Ruby on Rails because it is an open source framework that is used to create websites and web applications. It is easy to learn and use, and I find it to be very efficient. I have also used Django, which is a Python-based framework that is used for developing websites. It is also open source and very easy to use. Finally, I have used Laravel, which is a PHP-based framework that is used for developing web applications. It is also open source and very easy to use.

      What the interviewer is looking for:
    • - Specific frameworks
    • - How they use them
    • - What they like/dislike

  • Question: Why do you want to work for us?
  • Question Overview: This question will help you understand if a candidate is genuinely interested in the company and the position.

    Sample Answer: I’m very interested in the work you do at ABC Company. I’ve been following your blog for the past year and have been impressed with your recent posts on web development trends. I’m also very interested in the company culture and how you support your employees.

      What the interviewer is looking for:
    • - Passion
    • - Interest
    • - Knowledge of company

  • Question: How would you design a Javascript class and send the data over the server?
  • Question Overview: A web developer should be able to design and implement a Javascript class that can be sent to the server to be processed. This question will help you determine if a candidate has the ability to design and develop a Javascript class that can be sent to the server.

    Sample Answer: I would first create a Javascript class that includes all of the necessary functions, variables and methods. Next, I would send the data over the server using AJAX. Finally, I would process the data on the server using PHP.

      What the interviewer is looking for:
    • - How they plan to design and implement
    • - How they plan to send data over the server
    • - How they plan to process the data

  • Question: How will you close a toggle menu when click on rest of the page?
  • Question Overview: This question tests a candidate’s ability to think outside the box and solve problems. It also shows how they will approach a problem and how they will communicate their solution.

    Sample Answer: When a user clicks on the toggle menu, I would close the menu and then reopen it when the user clicks on the rest of the page. This ensures that the menu is always visible and accessible.

      What the interviewer is looking for:
    • - Problem-solving skills
    • - Communication skills
    • - Ability to explain a solution

  • Question: What are the three things you look for when considering working for a company?
  • Question Overview: This question will give you insight into a candidate’s priorities and what they value most in a company.

    Sample Answer: I look for a company that values its employees, offers opportunities for growth and is committed to the success of its customers. I also want to work for a company that is transparent in its business practices and has a positive work environment.

      What the interviewer is looking for:
    • - Priorities
    • - Values
    • - What they look for

  • Question: Why do you want to leave your current job?
  • Question Overview: This question will help you determine if a candidate is looking for a new job because they are unhappy or if they are looking for a new challenge.

    Sample Answer: I’ve been working as a web developer for the past three years and I’m ready to take on more responsibility and challenge myself. I’m excited to work with a team that shares my passion for web development and to learn from a leader who has been in the industry for over 20 years.

      What the interviewer is looking for:
    • - Motivation
    • - Reasons for leaving

  • Question: What is your skill level with Flash?
  • Question Overview: Flash is a dying technology, but it is still used in some industries. Knowing how a candidate feels about Flash will help you determine if they are the right fit for your team.

    Sample Answer: I have a basic understanding of Flash, but I’m not a fan of it. I prefer to use HTML5 and CSS3 because they are more accessible and responsive.

      What the interviewer is looking for:
    • - General knowledge
    • - How they feel about Flash
    • - Specifics on their skill level

  • Question: How will you implement a UI according to the design?
  • Question Overview: A web developer should be able to follow a design and implement it in a way that is functional and visually appealing. This question will help you determine if a candidate is able to follow instructions and work with others.

    Sample Answer: I’m a strong communicator and I’m able to work well with others. I’m also detail-oriented and I pay close attention to the design specifications. I’ll review the design with the designer and ask questions if I don’t understand something. Once we agree on the design, I’ll implement it according to the specs.

      What the interviewer is looking for:
    • - Ability to follow instructions
    • - Collaboration
    • - Communication skills

  • Question: How would you describe prototypal inheritance?
  • Question Overview: A web developer should have a strong understanding of prototypal inheritance, as it is a fundamental concept in JavaScript. This question will help you determine if a candidate has a working knowledge of prototypal inheritance and how they apply it.

    Sample Answer: Prototypal inheritance is a JavaScript concept that allows developers to create objects that inherit properties from other objects. This is useful for creating reusable code and reducing redundancy. For example, if I want to create an object that inherits the properties of another object, I can use the Object.create() method.

      What the interviewer is looking for:
    • - General knowledge
    • - Specifics on how they apply it
    • - How they use it in their work

  • Question: What is the difference between var / const / let?
  • Question Overview: A web developer should have a strong understanding of the differences between these three types of variables. This question will help you determine if a candidate has a working knowledge of JavaScript and how they plan to use it in their work.

    Sample Answer: A web developer should be aware of the differences between these three types of variables. A var is a variable that can be changed at any time, a const is a variable that cannot be changed and a let is a variable that can be changed but only within the current scope. I use const and let variables to ensure that my code is efficient and reliable.

      What the interviewer is looking for:
    • - General knowledge
    • - Specifics on how they use each
    • - How they plan to use them

  • Question: How will you differentiate between inner join and outer join?
  • Question Overview: A web developer should have a working knowledge of SQL and how it is used to manipulate data. This question will help you determine if a candidate has a strong foundation in SQL and can apply it to web development.

    Sample Answer: Inner join is used to compare two tables and return only the records that match. Outer join is used to compare two tables and return all records from both tables, even if they do not match. For example, if I want to compare a customer’s order history with their current order, I would use an inner join. If I want to see all of a customer’s order history, regardless of whether or not they have an active order, I would use an outer join.

      What the interviewer is looking for:
    • - General SQL knowledge
    • - Specifics on how they differentiate between joins
    • - How they would use the joins in a web development scenario

  • Question: How would you determine if one document node contains another?
  • Question Overview: A web developer should be able to understand and implement algorithms and data structures. This question will help you determine if a candidate is familiar with common data structures and how they would implement them.

    Sample Answer: A web developer can use a variety of methods to determine if one document node contains another. I would first check to see if the node exists in the first place, then I would check to see if it is a child of the node I’m looking for. If neither of those are true, I would check to see if the node is a parent of the node I’m looking for.

      What the interviewer is looking for:
    • - General knowledge
    • - Specifics on how they would implement
    • - How they would determine if one document node contains another

  • Question: What is the HTML Document Type?
  • Question Overview: A web developer should know the different types of HTML document and how they are used. This question will help you determine if a candidate has a strong understanding of HTML.

    Sample Answer: The HTML Document Type specifies the type of HTML document and is used to define the document’s character encoding and text directionality. There are three types of HTML documents: HTML, XHTML and HTML5. I use the HTML Document Type to specify the document’s character encoding and text directionality.

      What the interviewer is looking for:
    • - General knowledge
    • - Specifics on how they use each type
    • - How they determine the type

  • Question: How will you find if a number is prime or not?
  • Question Overview: A web developer should be able to write efficient code that is both readable and maintainable. This question will help you determine if a candidate knows how to write efficient code that is easy to read and understand.

    Sample Answer: I would first check if the number is even or odd, and then use the Sieve of Eratosthenes to determine if the number is prime or not.

      What the interviewer is looking for:
    • - Efficient code
    • - Readability
    • - Maintainability

  • Question: What projects have you worked on?
  • Question Overview: This question will help you determine if a candidate has the experience and skills to be successful in the role.

    Sample Answer: I’ve worked on a variety of projects, including a social media management tool that allows users to schedule posts and track engagement, a photo sharing website that allows users to upload and share photos with friends and family, and an online store that allows users to purchase products. I’ve learned how to work with a team to meet deadlines, as well as how to troubleshoot bugs and optimize performance.

      What the interviewer is looking for:
    • - Specifics of projects
    • - What they learned from each project
    • - How they contributed to the team

  • Question: Have you worked in a team before?
  • Question Overview: A web developer should be able to work in a team environment and collaborate with other team members. This question will help you determine if a candidate is able to work well with others.

    Sample Answer: I’ve worked in a team environment for the past three years. I’ve learned how to communicate with my teammates, as well as how to work together to achieve a common goal. I’m also familiar with the tools and processes that are used to facilitate communication and collaboration.

      What the interviewer is looking for:
    • - Teamwork
    • - Collaboration
    • - Communication

  • Question: How do you resolve conflicts between your teammates?
  • Question Overview: This question will help you determine if a candidate can work well with others and resolve conflicts in a professional manner.

    Sample Answer: I always begin by listening to both sides of the story. I then ask questions to clarify what each person wants and needs, and how I can help them reach their goals. I am always open to compromise, but I also know when it is time to take a stand.

      What the interviewer is looking for:
    • - How they handle conflict
    • - How they communicate
    • - How they collaborate

  • Question: How will you implement inheritance in JavaScript?
  • Question Overview: A web developer should be able to implement inheritance in JavaScript. This question will help you determine if a candidate has a working knowledge of the concept and how they will apply it in their work.

    Sample Answer: Inheritance is a programming technique that allows developers to create classes that are derived from other classes. The derived class inherits the properties and methods of the parent class. In JavaScript, inheritance is achieved through prototypal inheritance. I would create a base class named “Person” and define its properties and methods, then create a derived class named “Manager” and inherit the properties and methods of the parent class. I would then test the derived class by instantiating an object of the parent class and checking if the properties and methods are available.

      What the interviewer is looking for:
    • - General knowledge
    • - Specifics on how they would implement
    • - How they would test