Q41. What are functional components?
The functional components are just simple functions to create simple components just by passing a context. Every functional component follows two rules, 1. **Stateless:**...
Technical Question Bank · Peer-Reviewed
Job Interview Questions and Answers Directory
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (138 available).
Active:
Tag: components ×
Q42. What is React Intl?
The _React Intl_ library makes internationalization in React straightforward, with off-the-shelf components and an API that can handle everything from formatting strings,...
Q43. What are dynamic components?
The dynamic component will allow you to dynamically switch between multiple components without updating the route of the application and even retaining the state of the c...
Q44. What are the two ways of formatting in React Intl?
The library provides two ways to format strings, numbers, and dates: 1. **Using react components:** ```jsx harmony ``` 2. **Using an API:** ```javascript const messages =...
Q45. How to use `<FormattedMessage>` as placeholder using React Intl?
The `` components from `react-intl` return elements, not plain text, so they can't be used for placeholders, alt text, etc. In that case, you should use lower level API `...
Q46. What are async components?
In large applications, we may need to divide the app into smaller chunks and only load a component from the server when it's needed. To make this happen, Vue allows you t...
Q47. What is the structure of async component factory?
Async component factory is useful to resolve the component asynchronously. The async component factory can return an object of the below format. ```javascript const Async...
Q48. What is Shallow Renderer in React testing?
_Shallow rendering_ is useful for writing unit test cases in React. It lets you render a component _one level deep_ and assert facts about what its render method returns,...
Q49. What is `TestRenderer` package in React?
This package provides a renderer that can be used to render components to pure JavaScript objects, without depending on the DOM or a native mobile environment. This packa...
Q50. What are recursive components?
The Components that can recursively invoke themselves in their own template are known as recursive components. ```javascript Vue.component('recursive-component', { templa...