React Interview Questions and Answers

Ques 6. Why is React widely used today?

React provides users with an ample number of advantages when building an application. Some of them are as follows:

• With React, UI testing becomes very easy.
• React can integrate with Angular and other frameworks easily.
• The high readability index ensures easy understanding.
• React can be used for both client-side and server-side requirements.
• It boosts application performance and overall efficiency.
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Ques 7. Are there any disadvantages to using React?

There are some limitations when using React as mentioned below:

• Writing code is complicated as it uses JSX and inline template formatting.
• Beginners might find it tough to cope with its syntaxes and methods.
• The library contains a huge repository of information, which might be overwhelming.
• React is a simple library and not a complete framework hence calls for dependencies.

Ques 8. Differentiate between Angular and React.

Please check this: http://withoutbook.com/DifferenceBetweenSubjects.php?subId1=115&subId2=114&d=Difference%20between%20Angular%20and%20React

Ques 9. What is the meaning of the component-based architecture of React?

In React, components are foundations used to build user interfaces for applications. With the component-based system in place, all of the individual entities become completely reusable and independent of each other. This means that rendering the application is easy and not dependent on the other components of the UI.

Ques 10. How does rendering work in React?

Rendering is an important aspect of React as every single component must be rendered. This is done using the render() function. Once the function is called, it returns an element that represents a DOM component.

It is also possible to render more than one HTML element at a time by enclosing the HTML tags and passing them through the render function.