Front-End Developer Interview Questions

The second interview will be more of a “meet and greet” to determine whether you fit the team and company culture. It’s important to have a firm sense of the salary you expect or desire in a new role, even if your interviewer doesn’t bring up the subject during the interview. When you have a numerical range in mind and the rationale behind it, you can approach the entire job search process feeling confident in your earning potential and qualifications. Interviewers ask this to learn more about your web development passions, the motivations behind your involvement in this profession, and the diversity of your experience. They may also want to gauge how your preferences align with the projects you’d be completing if hired.

frontend developer interview questions

Cross-Site Scripting (XSS) is an attack that occurs when an attacker uses a web application to send malicious code to a different end-user. The outermost element that uses the block layout establishes the initial block layout rules. Every element laid inside the initial block will follow the same rules. Elements in a BFC would have the same margins, borders, padding and would interact with other blocks in the same context.

Front End Interview Handbook

Therefore we use a tool like webpack to grab all the files and concatenate them together. That way, we can serve 1 or 2 “bundles” of code instead of 100 individual files. A stylesheet is a template file consisting of font and layout settings to give a standardized look to a website or web application.

The best way to prepare is to simulate the interview conditions, so you’ll want to practice giving answers verbally. Behavioral interview questions are focused on who you are as a developer, as a teammate, and as an individual. These questions help the interviewer get to know who you are as a person, beyond your coding ability. They’ll also help them determine if you’ll be a good fit for their team and if you share some of the same values that the company looks for. Behavioral interview questions are more about your personality and your skills that aren’t related to coding. Each question is accompanied by a detailed answer to help you understand the underlying concepts and showcase your expertise effectively.

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Also, mention how you prevent yourself from getting stuck in the first place, such as research in advance and making sure you don’t stretch the project’s scope. First, you should make sure that your code is minified and compressed. This reduces the size of your files, which makes them faster to download. You’ve probably been a front-end developer for at least a few years, which is forever in development time.

frontend developer interview questions

Most animations and transitions are brought into CSS through JavaScript; another way in which CSS, JavaScript, and HTML are so entwined. You might name an element in CSS and set its parameters with CSS only to process an animation with JavaScript. There are some built-in animations and transitions in CSS, but they tend to be fairly rudimentary. The important thing is how you react when you make a mistake. Talk about the steps you take to fix mistakes, such as undoing your changes or writing tests. Also, mention how you prevent yourself from making the same mistake twice, such as keeping better documentation.

What is load balancing and how does the front-end load balancer work?

If you’ve ever been on the other side of the table, draw on those experiences. They are likely in the middle of a workday with “Interview” on their calendar. Hopefully, they’ve looked at your resume and have been given some instructions from the hiring manager.

frontend developer interview questions

For example, if you’re going to be using Kotlin for mobile development, you’ll want to practice questions around that language. Perform a simple Google search to find common interview questions, or touch base with other developers at the company and ask how to prepare. Or, are you a recruiter hunting for exceptionally talented front-end developers? If the answer to at least one of them is yes, you have come to the right place.

What is the difference between SQL and NoSQL databases?

As a result, these functions are referred to as non-blocking functions. Asynchronous functions are often favored over synchronous functions because they do not prevent the program from running until it has completed processing, whereas synchronous functions do. In the object-oriented programming paradigm, Polymorphism is the ability of an action or method to perform different functions based on the object it’s acting upon. Some aspects of Polymorphism include overloading, overriding and dynamic method binding. Developers, be it frontend or backend, who work on projects in their own time are our favorites, as it shows a love of programming outside of monetary incentives.

  • Some benefits of using bootstrap include reducing required written code, having a consistent framework across multiple projects, and easier creation of responsive layouts.
  • Other organizations will ask technical questions during the interview.
  • Your developer resume will give the interviewer a good place to start with their questions, so be sure that it highlights your front-end development skills.
  • An event loop is the foundation of real-time JavaScript response.
  • If you’re interested in becoming a front-end developer, there are a few things you should keep in mind.
  • Talk about the tools you use to manage your time (such as a Pomodoro timer) and how you use them.
  • A list of helpful front-end related questions you can use to interview potential candidates, test yourself or completely ignore.

MongoDb is a NoSQL database which shows the data elements using JSON-like Structure. To make changes in MongoDB the programmer has to use MongoBD Query Language. XSS, Cross-Site Scripting is an attack which takes place when any attacker uses a web application to send any malicious code, in the form of browser side script, to another user.

Do Front-end Developers need to know Data Structure & Algorithms?

Some of the most common front-end development challenges include cross-browser compatibility issues, dealing with legacy code, and optimizing website performance. Another issue developers frequently https://wizardsdev.com/en/vacancy/middle-frontend-developer-react-typescript/ run into (but unfortunately less frequently address) is the ability to make their code ADA compliant. A front-end development tool is any software that helps develop a website or web application.

CSS and HTML are so frequently used together that they are generally learned together and very well integrated. No one likes being stuck, but it’s a fact of life for any programmer. Talk about methods you use to get unstuck, such as asking for help, doing research, or taking a break.