react-redux

问题 CHANGED, STILL NO ANSWER I followed this example: https://jsfiddle.net/4np9u17g/11/ I want to make it like there - after inputing value focus should go to next input. I use new syntax of refs and redux form, what am i doing wrong? constructor() { super(); this.field1 = React.createRef(); this.field2 = React.createRef(); this.field3 = React.createRef(); this.field4 = React.createRef(); this.field5 = React.createRef(); this.field6 = React.createRef(); } On change function (I made it really

问题 I'am able to get the first level of JSON Data i.e., objects / Product List What I'am trying to achieve is on click of view button it has to open respective product detail page just like e-commerce website. I have got stuck on the logic how i will bind and redirect to respective product page. Now what I'am trying is : i have created a new file ProductDetail.jsx and Lost what to do :-( Appreciate your kind help! File : products.json { "data": [ { "id": 1, "title": "Jackets", "img": "./img/p1

问题 How to trace changes in store from this component. In the external component Menu , I select the menu item and dispatch to store as parameter content . Depending on what I chose, I need to substitute the contents of the following component: class WorkSpace extends Component { constructor(props) { super(props); this.state = { content: this.props.mainStore.content } } render() { return ( <div className = "workspace"> //some content </div> ); } } export default connect( state => ({ mainStore:

问题 As you know some lifecycle methods like componentWillReceiveProps are now deprecated. Well, my code used this lifecycle method and now I have no idea how to migrate to the new API of React. Here is how I used: componentWillReceiveProps(nextProps) { if (nextProps.newPost) { this.props.posts.unshift(nextProps.newPost); } } In the react blog I could read that... Together with componentDidUpdate, this new lifecycle should cover all use cases for the legacy componentWillReceiveProps. ... but how

问题 I have created react native app with expo cli. I have a screen in which there is 6 section I just wanted to change the bottomTabNavigator for each section when scroll arrives at a particular section. import React from 'react'; import { Platform } from 'react-native'; import { createStackNavigator, createBottomTabNavigator } from 'react-navigation'; const HomeStack = createStackNavigator( { Home: FlatListComponent, }, config ); HomeStack.navigationOptions = { tabBarLabel: 'Home', tabBarIcon: (

问题 I am designing react application with node server. I have created a custom Private Route import React from 'react'; import {connect} from 'react-redux'; import {Route, Redirect} from 'react-router-dom'; class PrivateRoute extends React.Component{ render() { const { isAuthenticated, component: Component, ...rest } = this.props; return ( <Route {...rest} component={(props) => { if(isAuthenticated){ return <Component {...props}/> } else{ return <Redirect to="/login" /> } }}/> ) } } const

问题 I have a Spring Boot ResourceServer , and a React client application. I am trying to send a POST request to one of the server endpoints (which has the @CrossOrigin annotation btw.), however, I am getting this error in the console: Access to XMLHttpRequest at 'http://localhost:8080/api/search' from origin 'http://localhost:3000' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: It does not have HTTP ok status. The preflight request returns a 401

问题 i have list of jobs for different job id. i have to fetch the particular job details based on job id. I have created action and reducer function for that. But, i am new to redux not able to understand how to connect this with component and display the result. i am calling the api by axios to get the job details on particular id. I am not aware of how to make the call into the component. Now, I am getting undefined jobId. action.js export const retrieveLocations = (jobId) => (dispatch) => {

问题 I am using the create-react-kotlin-app and following the instructions on its GitHub page to create a React + Redux app using Kotlin. The first install part works fine: create-react-kotlin-app my-app cd my-app npm start The app works fine, but when I try to add Redux: npm install @jetbrains/kotlin-react-redux npm WARN @jetbrains/kotlin-extensions@1.0.1-pre.49 requires a peer of core-js@^2.5.7 but none is installed. You must install peer dependencies yourself. npm WARN ajv-keywords@3.2.0

问题 I am new in react and trying to learn redux. now I want to access the store inside a class. but it gives me an error the i cant use hook in class. when i use this code in function ( as i saw in YouTube tutorial ) it works without any problem; here I access to counter in the store. function App() { const counter = useSelector(state => state.counter); return <div>{counter}</div>; } but when i want to do this in class it gives me an error that I cant use hooks in class. so how can i access to my