Hire ReactJS Developers

While you are about to interview a ReactJS developer for hire, you can ask some of the following quotations to gauge their skills and expertise and see if they align with your project needs.

1. What is the use of ReactJS?

   ReactJS is a front-end framework capable of building high-performance and scalable front-ends for all applications. It is used to create dynamic front-end applications that are interactive and are being used by a large number of users at once. Moreover, ReactJS is also used to develop applications that frequently update without being re-rendered and reloaded.

2. Why is ReactJS highly popular?

   ReactJS is highly popular because

   • It is backed by Facebook (Meta).
   • ReactJS follows component-based architecture, which allows teams to decide their own architecture for projects.
   • It comes with a virtual DOM that provides an immense performance boost compared to other frameworks.
   • Moreover, it also includes code reusability at all levels.

   Being a popular framework, you can easily hire dedicated ReactJS developers for scalable, flexible, engaging reliable web apps and software.

3. How do you start a project with React?

   Creating a React project is a straightforward process. Hire React Developer to smartly harness its features to get desired final product. Install the Create-React-App library that will help you with creating a React application. Also, you will need Node and NPM installed and running on your device. Once Node is installed, you can access the React library for your project.

   The Create-React-App library provides boilerplate code and folder structure from where you can start your development. To create a new project, you have to type npm create-react-app project name to create a new project with all the required settings for a React application.

4. How to use CSS frameworks with React?

   You can use CSS frameworks that provide styles with classes and ids that are ready to use.

   There are two ways to use CSS frameworks with React.

   • Either you use them by providing a link in the index.html file
   • You can install their library. Most popular CSS frameworks have their libraries available in the npm. So you can just install and import those libraries without any issues.

5. Do ReactJS have reusable components? If yes, then how to reuse them?

   React components are highly reusable & are very easy. Any efficient ReactJS developers for hire will emphasize the creation of reusable components. Such components allow you to reuse them without any significant changes to any other project.

   To reuse components in the same project, you can import the component and initialize it without any issues. Moreover, if you are going to another project, you can copy the whole component, paste it into the new project’s folder, and import it to use again.

6. What type of components are available in React?

   There are two main types of components in React: Class-based components and function-based components.

   • Class Components – They have their own states and variables. And have their render method along with other helper methods that can be invoked to perform some instructions.

   Function-based Components – Function-based components are called stateless components as they don’t have their own set of states and variables. Moreover, they have a render method that is used to render the element on the screen.

7. How can we update the state in React components?

   React states are immutable. Hence, they cannot be changed by using the typical assignment operator. There are special methods called the set state for each state. You can use that method to set the state to the desired state.

   Moreover, you can get the state of any state variable by using its name itself.

8. What is JSX?

   JSX is an extension of normal JavaScript. It is used extensively in React and is the base of React components. Also, JSX allows developers to write JavaScript code directly in the JS files.

9. What are events in React?

   React events can be considered as any interaction by the user that emits a signal to the server from the browser. Clicking a button, hovering on a div, and other things are known as events.

   Moreover, in React the events are written in camelCase in contrast to the traditional HTML way of writing events.

10. What is key in React Lists?

    Keys are used in React lists to identify each list item uniquely. In React, when the virtual DOM updates frequently, it needs a unique identifier to track the state of each item. And that’s where keys are used.