Top 50 ReactJS Interview Questions Updated 2018 version!! This book contains tricky and theoretical ReactJS interview questions that an interviewer asks. It is a compilation of advanced ReactJS interview questions after attending dozens of technical interviews in top-notch companies like- AirBnb, Google, Ebay, Amazon etc. How will this book help me? By reading this book, you do not have to spend time searching the Internet for ReactJS tricky interview questions. We have already compiled the list of the most popular and the latest ReactJS Interview questions. Are there answers in this book? Yes, in this book each question is followed by an answer. So you can save time in interview preparation. What is the best way of reading this book? You have to first do a slow reading of all the questions in this book. Once you go through them in the first pass, mark the questions that you could not answer by yourself. Then, in second pass go through only the difficult questions. After going through this book 2-3 times, you will be well prepared to face a technical interview for Software Engineer position in ReactJS. What is the level of questions in this book? This book contains questions that are good for a Associate Software engineer to a Principal Software engineer. The difficulty level of question varies in the book from a Fresher to an Experienced professional. What are the sample questions in this book? What are the main features of React? What are the main advantages of React? What are the major limitations of React? What do you know about JSX? What is Virtual DOM? What are the differences between DOM and Virtual DOM Can web browsers read JSX? What is the difference between React and AngularJS? Why everything is a component in React? What is the use of render() function in React? How will you embed multiple components into one component in React? What is Props in React? What is state in React? What are the main differences between State and Prop in React? How will you update the state of a specific component in React? What is the use of arrow function in React? What are the differences between Stateful and Stateless components in React? What are the phases in lifecycle of a React component? What are the important lifecycle methods of a React component? What is an Event in React? What is a SyntheticEvent in React? What is Refs in React? What are the popular use cases for using Refs in React? How can we develop modular code in React? How can we create forms for user input in React? What is the difference between controlled and uncontrolled components in React? What is a Higher Order Component in React? What are the popular use cases of HOC in React? What is a Pure Component in React? Why do we use Keys in React? What were the major disadvantages of MVC framework? What is Flux? What is Redux library? What are the three main principles of Redux? What is the concept of "Single source of truth”? How does the data flow through Redux? How will your define an Action in Redux? How does Reducer work in Redux? What is Store in Redux? What are the differences between Redux and Flux? What is ReactRouter?
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