Redux interview questions how to#
Redux interview questions install#

Here, while dispatching an action to the store, we're passing a payload with some value which we're using inside the reducer to increment or decrement the store value. Now, if you run the application by executing the npm start command from the terminal, you will see the following logs printed in the console: To create a store, we need to import the createStore function like this: import from 'redux' Ĭonsole.log('current state', store.getState()) In Redux, you use the store to manage and track the data that's changing in the application.

Redux interview questions install#

Now open the terminal again and execute the following command from the redux-demo folder: npm install above command will install the Redux library with version 4.1.0 to use in your project (which is the latest version at the time of writing this article). Once you've created the project, delete all the files from the src folder and create a new file index.js inside the src folder. Npx in this case allows us to use the create-react-app npm package to create a new React project without installing it on our local machine. Let's create a new React project so we can learn Redux basics.Įxecute the following command in the terminal/command prompt to create a new React project using create-react-app: npx create-react-app redux-demo Redux provides a single store that you can use to manage a large amount of data. It's a library that you can use in any other library or framework like Angular, Vue, and even vanilla JavaScript.īut developers mostly use Redux when working with React. The Redux library is not specific to React. Redux is a state management library that helps you better manage state in your applications. It's a great project you can add to your portfolio and resume. Here's a preview of the app which we'll be building in this article.

Redux interview questions how to#

So in this article, we'll explore the basics of Redux and how to use it. There are a lot of concepts you need to know to use it properly, like reducers, actions, store, pure functions, immutability, and much more.īut every React developer should know the basics of how to work with Redux, since industry projects often use Redux to manage larger projects. So take a look at the list of react interview questions and prepare yourself for your next interview. It’s very important that you learn about the company asked questions and prepare yourself according to that. Having a few tucked away to review before an interview will be a huge benefit to you later.Redux can be confusing for beginner React developers to understand. In this guide, we have come up with certain questions that will help you to prepare for your react questions. Use the STAR method to practice answering non-technical questions with your partner.Īgain, if you come up with a story or example you feel good about, jot it down somewhere! It's tough to come up with stories like this in an interview on the spot. Review the STAR method, discussed in this lesson on non-technical interviews. (i.e.: Telling a story about a time you tracked down a tricky bug versus simply saying 'I'm good at problem-solving!'). Offering a tangible story or example that highlights your skills usually goes much further in an interview than simply telling your interviewer you're good at something. What are some ways that the Redux library uses functional programming?.What is the benefit of using constants instead of strings for action types?.What does it mean when a component is mounted in React? How about when it is unmounted?.What is React Redux and what functionality does it provide?.What are action creators and why should we use them?.What is the benefit of combining reducers? Why might we choose to do so?.

What are the component lifecycle methods? Briefly list each, when they're called, and what we might use them for.

What is a reducer and how do reducers work?.

What is Redux? What are the main functions and methods that Redux provides?.