Q31. How to access current locale with React Intl?
You can get the current locale in any component of your application using `injectIntl()`: ```jsx harmony import { injectIntl, intlShape } from "react-intl"; const MyCompo...
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Q32. How to format date using React Intl?
The `injectIntl()` higher-order component will give you access to the `formatDate()` method via the props in your component. The method is used internally by instances of...
Q33. What are the core principles of Redux?
Redux follows three fundamental principles: 1. **Single source of truth:** The state of your whole application is stored in an object tree within a single store. The sing...
Q34. What is the use of the `ownProps` parameter in `mapStateToProps()` and `mapDispatchToProps()`?
If the `ownProps` parameter is specified, React Redux will pass the props that were passed to the component into your _connect_ functions. So, if you use a connected comp...
Q35. How to use Polymer in React?
You need to follow below steps to use Polymer in React, 1. Create a Polymer element: ```jsx harmony ; Polymer({ is: "calendar-element", ready: function () { this.textCont...
Q36. 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...
Q37. 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...
Q38. 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...
Q39. How do you render Array, Strings and Numbers in React 16 Version?
**Note:** This question references React 16. These features remain valid in current React versions (18/19). **Arrays**: Starting with React 16, you can return multiple si...
Q40. What are hooks?
Hooks is a special JavaScript function that allows you use state and other React features without writing a class. This pattern has been introduced as a new feature in Re...