4.5 years experienced Frontend developer interview in Accenture #react

Summary

In this video, the speaker shares their experience interviewing for a role at Accenture. They describe the technical interview process, which consisted of a single, two-hour round covering HTML, CSS, JavaScript, TypeScript, React, and Redux. Key topics discussed include asynchronous JavaScript, promises, event delegation, lifecycle methods in React, and state management in both class-based and functional components. The speaker provides insights into the questions asked, including coding challenges and theoretical queries on different technologies. Ultimately, the speaker received an offer from Accenture directly after this interview, with no additional rounds.

Takeaways

• 😀 The interview for the Accenture position was a single, 2-hour technical round.
• 😀 The interview was divided into three main parts: HTML, CSS, and JavaScript; TypeScript; React and Redux.
• 😀 The interviewer asked fundamental questions on HTML structure, semantic elements, and CSS Box model.
• 😀 JavaScript-related questions included topics like async/await, closures, bind/call/apply, event delegation, and promises.
• 😀 The interviewer tested knowledge of advanced JavaScript concepts such as throttling, debouncing, and generator functions.
• 😀 TypeScript questions focused on the differences between interface/type, union/intersection, enums, and generics.
• 😀 In the React section, questions revolved around component life cycles, state handling in both class-based and functional components, and the use of hooks like useEffect.
• 😀 The candidate was asked how to prevent unnecessary re-renders in React and the differences between class and functional components in terms of state management.
• 😀 Redux questions included the workflow of Redux, connecting components to the store, middleware like Redux Thunk and Redux Saga, and differences between them.
• 😀 The interviewee was also tested on their knowledge of props, error boundaries, and using React Suspense and Fragment.
• 😀 The candidate received the job offer directly after the technical interview, without any additional rounds.

Q & A

How did the interview process for Accenture begin?

The interview process began when the candidate applied for a position via LinkedIn. Afterward, Accenture's HR reached out and scheduled a single technical interview, which lasted for about two hours. No additional rounds were scheduled, and the candidate received the offer letter directly after this interview.

What was the structure of the technical interview?

The technical interview was divided into three parts: HTML, CSS, and JavaScript; TypeScript; and React & Redux. Each section tested different skills and concepts relevant to web development.

What are some of the key HTML and CSS topics that were covered in the interview?

The interviewer asked about the HTML structure, semantic elements in HTML, ways to define CSS in an HTML page (internal, external, inline), the box model in CSS, and the differences between relative and absolute positioning. Additionally, Flexbox versus CSS Grid was discussed.

What JavaScript concepts were explored during the interview?

The interviewer explored various JavaScript concepts, including asynchronous vs. synchronous execution, closures, the differences between bind, call, and apply, event delegation, throttling and debouncing, promises, and how to handle them. Other topics included try/catch with finally, generator functions, and the differences between 'var' and 'const'.

What was the main focus of the TypeScript part of the interview?

The TypeScript section focused on the differences between interfaces and types, union vs. intersection types, enums, generics, and utility types such as 'Pick' and 'Omit'.

How did the interviewer assess React knowledge?

In React, the interviewer asked questions about the virtual DOM, reconciliation, lifecycle methods, and how state works in class-based and functional components. They also asked about the behavior of components when state is updated multiple times in one go and how hooks like 'useEffect' and 'useRef' function in functional components.

What specific questions were asked regarding React's state handling?

The interviewer asked about the difference in how state works in class-based components versus functional components, how many times a component re-renders when state is updated multiple times, and how the 'useRef' hook behaves with multiple references.

What was discussed about Redux during the interview?

In Redux, the interviewer asked about the basic workflow, how to connect a component to the Redux store (using 'connect' for class components and hooks for functional components), middleware like Redux Thunk and Redux Saga, and the differences between these middleware options.

What is event delegation in JavaScript and how was it addressed in the interview?

Event delegation is a technique in JavaScript where a single event listener is attached to a parent element to handle events for multiple child elements. The interviewer asked the candidate to explain this concept, along with other JavaScript-related concepts like throttling, debouncing, and promises.

What is the importance of 'useEffect' in React, and how was it evaluated?

The interviewer asked the candidate to explain all possible use cases of 'useEffect', including how it can be used to mimic lifecycle methods like componentDidMount, componentDidUpdate, and componentWillUnmount. They also inquired about what happens when the dependency array is omitted from 'useEffect'.