Recent questions tagged ReactJs

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reactjs - React hooks in react library giving Invalid hook call error

I create a react library using https://www.npmjs.com/package/create-react-library And successfully used ... react versions as peerDependencies See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - React Router v5.0 Nested Routes

I'm building a react app and I can't make the routing work. I need one common layout (header, footer) ... be appreciated. Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Apollo Client Cache vs. Redux

I'm trying to migrate from Redux Store to use Apollo Client Cache that comes with Apollo Graphql Client. ... migrating to Apollo Client Cache? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - How to use React without unsafe inline JavaScript/CSS code?

Background I have to use a Content Security Policy for a react application. The reason, that is however not ... of React without minification? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Redux-form handleSubmit: How to access store state?

In a redux-form handleSubmit function, which makes an Ajax call, some properties from the Redux state are needed in ... Is there a better way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - how react programmatically focus input

I'm trying to implement a very simple use case, a UI feature, where: There is a label with some content in ... class is losing 'hidden' please? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - React - defaultProps vs ES6 default params when destructuring (performances issues)

I just came across a question about React performances when settings default values in one of my stateless functional ... you do it properly? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - How to access Sass variables using javascript inside a react component?

I just want to change the value of the Sass variables shown below from theme.scss inside a react component. theme. ... color changes }, [state]) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Checked - Unchecked doesn't working in ListView - React Native

friend I Will integrated checked - unchecked in listView. So that When user click on checked then store the ... selectedWorker method. GIF : See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Remove element from nested redux state

I want to remove a element from my redux state. Im using seamless-immutable and its API to operate on the state. But I ... { id: action.id, } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Cannot read property 'handleClick' of undefined when using map

I am trying to make a table row function like a Link with react-router. I keep getting the error Cannot read property ' ... </tr> ) }); ... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - import a Json file in a React Component

I'm trying to load languages.json file in a React component. I'm getting the following error at the very first ... do you think is the problem? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Redirect to third party url using react-router-dom

I'm very much aware of the react-router-dom I want to do a conditional rendering of the component. If use ... redirect to a third party website? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Firebase Firestore emulator error `Host has been set in both settings() and useEmulator(), emulator host will be used`

first of all that is the full error I got. @firebase/firestore: Firestore (8.1.1): Host has been set ... a bug related to firebase emulators?. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Firebase - Request header field x-firebase-gmpid is not allowed by Access-Control-Allow-Headers in preflight response

My product uses firebase rtdb, firestore, storage, auth, and hosting. I didn't make any changes to my ... -Request-Headers, Authorization" } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Reset navigation history to Login screen using react navigation

I would like after Login (Welcome) the user to navigate to Home. I reset the history ... TabNavigator(routeConfiguration, tabBarConfiguration); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - React this is undefined

React this is undefined in promise . Here is my code: export default class Album extends React.Component { ... components/Album.jsx?:81:17 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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914 views

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reactjs - create-react-app npm run build command

I have a built a small React application with create-react-app, and it runs fine from the local server after ... this I'd also appreciate it. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - const or let in React component

Say I have a React component -- dumb or not -- and I want to grab something from the store ... default connect(mapStateToProps)(MyComponent) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - set initial react component state in constructor or componentWillMount?

In react components is it preferred to set the initial state in the constructor() or componentWillMount()? export default ... key: value}); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Advantages and disadvantages of PWA only greenfield project?

Our team is starting new project with initial consideration of react-native as a framework to build on top of ( ... way to go forward with? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - How do I utilize dot notation when rendering components?

I have a simple component which is supposed to render different kind of fields into my form component: import React from ... How can I do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.0k views

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reactjs - Axios Excel file download using POST results in corrupted file

I was using Axios to download a file provided by a GET endpoint previously. The endpoint has changed and is now a ... do this in my React code. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Creating a web worker inside React

I have a React app created with create-react-app, not ejected. I'm trying to use web workers. I've tried ... app/issues/1277 (post by yonatanmn) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Authenticate async with react-router-v4

I have this PrivateRoute component (from the docs): const PrivateRoute = ({ component: Component, ...rest } ... before deciding what to display? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - GraphQL post request in axios

I have a problem with GraphQL. I want to send axios.post request to my server. I can do it in postman: { "query ... }) what's wrong in my code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - How to open/close react-bootstrap modal programmatically?

I need to open/close modal like $(element).modal('show') How to do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Redux store does not have a valid reducer

Haven't been able to find anything around here regarding this error: "Store does not have a valid reducer. Make sure ... }); } return store; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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