I feel like none of the answers have crystallized why mapDispatchToProps is useful. This can really only be answered in the context of the container-component pattern, which I found best understood by first reading:Container Components then Usage with React. In a nutshell, your components are supposed to be concerned only with displaying stuff. The only … Read more
If you’ve previously installed create-react-app globally via npm install -g create-react-app, we recommend you uninstall the package using npm uninstall -g create-react-app to ensure that npx always uses the latest version. Docs Use either one of the below commands: npx create-react-app my-app npm init react-app my-app yarn create react-app my-app if npm uninstall -g create-react-app … Read more
There are multiple ways of doing this, since state update is a async operation, so to update the state object, we need to use updater function with setState. 1- Simplest one: First create a copy of jasper then do the changes in that: this.setState(prevState => { let jasper = Object.assign({}, prevState.jasper); // creating copy of … Read more
You can use the history methods outside of your components. Try by the following way. First, create a history object used the history package: // src/history.js import { createBrowserHistory } from ‘history’; export default createBrowserHistory(); Then wrap it in <Router> (please note, you should use import { Router } instead of import { BrowserRouter as … Read more
In react-router-dom v6, “Switch” is replaced by routes “Routes”. You need to update the import from import { Switch, Route } from “react-router-dom”; to import { Routes ,Route } from ‘react-router-dom’; You also need to update the Route declaration from <Route path=”/” component={Home} /> to <Route path=”https://stackoverflow.com/” element={<Home/>} /> In react-router-dom, you also do not … Read more
Just children: React.ReactNode.
The problem with keyboard not dismissing gets more severe if you have keyboardType=”numeric”, as there is no way to dismiss it. Replacing View with ScrollView is not a correct solution, as if you have multiple textInputs or buttons, tapping on them while the keyboard is up will only dismiss the keyboard. Correct way is to … Read more
TL;DR npm uninstall node-sass npm install sass Or, if using Yarn yarn remove node-sass yarn add sass Edit3: yes, another edit. Moving to sass (dart-sass) is the best solution. Previous one included locking node-sass to version 4.x.x, which is 2 years old and lacks newer SCSS features. Edit2: sass-loader v10.0.5 fixes it. The problem is … Read more
If you don’t want to set the environment variable, another option is to modify the scripts part of package.json from: “start”: “react-scripts start” to Linux (tested on Ubuntu 14.04/16.04) and MacOS (tested by aswin-s on MacOS Sierra 10.12.4): “start”: “PORT=3006 react-scripts start” or (may be) more general solution by IsaacPak “start”: “export PORT=3006 react-scripts start” … Read more
There is only one reason when one needs to pass props to super(): When you want to access this.props in constructor. Passing: class MyComponent extends React.Component { constructor(props) { super(props) console.log(this.props) // -> { icon: ‘home’, … } } } Not passing: class MyComponent extends React.Component { constructor(props) { super() console.log(this.props) // -> undefined // … Read more