Heres how React's New Context API Works
Why Stack Overflow recommends it
Stack Overflow users link it when answering questions about passing props or shared state to deeply nested React components without Redux.
Recommended by 5 people across 5 different months, 2018 to 2020.
What it is
A short screencast by Wes Bos walking through React's then-new Context API, covering creating a context, wrapping an app in a Provider, and reading values with Consumers. He builds a small family-tree app with state and an updater function shared through context, with code on GitHub.
What people said
Recommends Rohith Rajasekharan · 2018-06 · Stack Overflow · on “Is Redux.js a sufficient way to separate data from view in a React.js/Node.js hybrid application?”
The new version of React has a context api which is really useful for handling data in your app and it works similar to redux [LINK] . Here's a video to get started if you need [this video]
Recommends Mike · 2018-07 · Stack Overflow · on “React Context and separate classes”
Thanks to this video [this video] I was able to get it working. Here's my solution... AuthCtrProvider.js import React, { Component } from 'react'; // create context blank, it gets filled by provider export const MyContext = React.createContext(); // the state object is initially in the AuthCtrProvider and gets passed into the context // via the value argument to the provider export default class AuthCtrProvider extends Component { state = { isAuthenticated: false, counter: 100, doubl: () => { this.setState({ counter: this.state.counter * 2 } ) } } render() { return ( // pass in this.state (which carries the data and the doubl func and also // pass in three additional functions <MyContext.Provider
Recommends ViktorMS · 2018-08 · Stack Overflow · on “Passing state to child component in react-redux with typescript”
Have you checked out React Context? Sounds like it would be something you might be interested in : [LINK] and [this video]
Recommends Sadeghbayan · 2019-12 · Stack Overflow · on “Passing props to nested child component”
you can use context API to have the props in the wrapper and easily accessible from child component. there is a great tutorial from wesbos on [this video] class App extends Component { render() { return ( <MyProvider> <div> <p>I am the app</p> <Family /> </div> </MyProvider> ); } } class MyProvider extends Component { state = { name: 'Wes', age: 100, cool: true } render() { return ( <MyContext.Provider value={{ state: this.state, growAYearOlder: () => this.setState({ age: this.state.age + 1 }) }}> {this.props.children} </MyContext.Provider> ) } }
Recommends Chukwuma Zikora · 2020-03 · Stack Overflow · on “Can't access context values in React”
Okay. You're really close. You still need to wrap your root component or hierachy with ReadingSessionProvider. So this is how it works generally. You create the context with const ReadingSessionContext = React.createContext(); You use it to make a context provider. Which you have done when you created the the ReadingSessionProvider class. You use the ReadingSessionProvider wrap the app section you want to access the consumer. So say <ReadingSessionProvider> <App /> </ReadingSessionProvider> Now the children of App component can use the values set in the ReadingSessionProvider. Either with useContext(ReadingSessionContext) or with ReadingSessionContext.Consumer See this video from Wes Bos for
Cites Craig · 2018-03 · Stack Overflow · on “React Context and separate classes”
I've given up hope on getting mt head around Redux (I'm new to React), and see the Alpha version of React offers a new Context. So I am attempting to learn it, and my goal is, I have a Navbar, which I want to respond to a state within my context, {isAuthorised: false} . I'm following this guys video [this video] : But he has all is code in a single file. I'm trying to do it 'right'. What I did was created a folder called 'context' and within that, created a jsx called provider.jsx. import React, {Component} from 'react'; export default class MyProvider extends Component { constructor(props) { super(props); this.state = { isAuthenticated: false } } render() { const MyContext = React.createContext(
Cites Norfeldt · 2018-05 · Stack Overflow · on “React Native: TextInput with state and AsyncStorage”
When typing on the keyboard I was seeing some warnings about the input being ahead of the JS code.. Native TextInput(react native is awesome) is 4 events ahead of JS - try to make your JS faster. So added the debounce and got this to "work": ... import { debounce } from 'lodash' ... export default class App extends React.Component { constructor(props) { super(props) this.state = { data, indexRef: data.reduce((result, item, index) => { result[item.title] = index return result }, {}), ready: false, } this.updatePitch = this.updatePitch.bind(this) this.saveLocally = debounce(this.saveLocally, 300).bind(this) } ... updatePitch(id, text) { // Copy the data let data = [...this.state.data] const in