Q161. Do you need to have a particular build tool to use Redux?
Redux is originally written in ES6 and transpiled for production into ES5 with Webpack and Babel. You should be able to use it regardless of your JavaScript build process...
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Q162. How Redux Form `initialValues` get updated from state?
You need to add `enableReinitialize : true` setting. ```javascript const InitializeFromStateForm = reduxForm({ form: "initializeFromState", enableReinitialize: true, })(U...
Q163. How React PropTypes allow different types for one prop?
You can use `oneOfType()` method of `PropTypes`. For example, the height property can be defined with either `string` or `number` type as below: ```javascript Component.p...
Q164. Can I import an SVG file as react component?
You can import SVG directly as component instead of loading it as a file. This feature is available with `react-scripts@2.0.0` and higher. ```jsx harmony import { ReactCo...
Q165. What is render hijacking in react?
The concept of render hijacking is the ability to control what a component will output from another component. It means that you decorate your component by wrapping it in...
Q166. How to pass numbers to React component?
We can pass `numbers` as `props` to React component using curly braces `{}` where as `strings` in double quotes `""` or single quotes `''` ```jsx import React from "react...
Q167. Do I need to keep all my state into Redux? Should I ever use react internal state?
It is up to the developer's decision, i.e., it is developer's job to determine what kinds of state make up your application, and where each piece of state should live. So...
Q168. What is the purpose of registerServiceWorker in React?
React creates a service worker for you without any configuration by default. The service worker is a web API that helps you cache your assets and other files so that when...
Q169. What is React memo function?
Class components can be restricted from re-rendering when their input props are the same using **PureComponent or shouldComponentUpdate**. Now you can do the same with fu...
Q170. What is React lazy function?
The `React.lazy` function lets you render a dynamic import as a regular component. It will automatically load the bundle containing the `OtherComponent` when the componen...