Recent questions tagged reactjs

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reactjs - Force React container to refresh data

In my React application, I have two distinct types of components: presentations and containers. It's roughly after ... elegant way to do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - way to embed if expressions inside JSX code?

I guess that stuff that goes into a react tag must be a react tag or a string; a function that returns ... embed if expressions inside JSX code? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - ESLint Must use destructuring state assignment

I am getting ESlint error for the following line this.state.items.map(item => ( The error is Must use ... this would be great. thank you See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Type Property Relying on Return Type of Another Property

I'm trying to pass an object to a function (in this case props to a React component). This object contains the following ... > infer T ? T : D. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - absolute path with react, react-app-rewire and typescript

i'm using create-react-app + typescript, and i want to add absolute paths. i'm trying to get to the point i ... paths in cra, ts, and rewire? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Add custom props to a custom component

I've built my own custom react-bootstrap Popover component: export default class MyPopover extends Component { // ... ... easier way to do it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Why I got Error while Creating React App?

I was new and want to learn ReactJS and I start to install a new empty folder with npx create-react-app ... -react-app@latest failed with code 1 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Is setState() inside componentDidMount() considered an anti-pattern

I've just had a look at this discussion about setState() inside componentDidMount(). You can see that after the ... I apply as an alternative? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Element type is invalid: expected a string (for built-in components) or a class/function

import React from 'react'; import ReactDOM from 'react-dom'; import Map from './components/map/container/map'; ... able to recognize the error. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Module not found: Error: Cannot resolve module 'fs'

I'm making a react app using Babel and Webpack and I want to use the file-exists package from npm. I already ... so I'm a little bit lost. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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609 views

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reactjs - import a module from node_modules with babel but failed

I wrote a module with es6 and publish to the npm, I want to use it in another project, so I type ... from node_modules, babel seems not work? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Create-React-App build - "Uncaught SyntaxError: Unexpected token <"

I realize this question has been asked multiple times but nothing has worked for me... I'm trying to ... be with my server configuration. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Does a render happen before function in React Hooks useEffect is called?

I would have thought that useEffect's first function gets called before the first render, but when ... ; export default ImageToggleOnMouseOver; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Next.js Global CSS cannot be imported from files other than your Custom <App>

My React App was working fine, using global CSS also. I ran npm i next-images, added an image, edited the next. ... <Component {...props} /> } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - How to generate sitemap with react router

I'm trying to figure out how to dynamically generate sitemap in reactJS server side (express) web app. I'm using react router. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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797 views

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reactjs - React router and this.props.children - how to pass state to this.props.children

I'm using React-router for the first time and I don't know how to think in it yet. Here's how i'm loading my ... I don't see how to do it now. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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800 views

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reactjs - React stateless component this.refs..value?

I don't know if I'm doing this correctly... If I want to get value from an input I use this.refs.whatever. ... {props.helpBlock}</span> </div> ) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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697 views

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reactjs - Webpack & Typescript image import

I'm working on a React application and using Webpack & Typescript. I would like to use an image in one of ... -large.png resource is not found. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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585 views

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reactjs - React native change listening port

I am using react native android and having face issues to deploy the app on an android device. When I ... will be highly appreciated. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - this.setState is undefined

I keep seeing answers that say to use => or .bind(this) but neither of those solutions worked. import React, { ... zip}); alert('click'); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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721 views

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reactjs - Testing React Functional Component with Hooks using Jest

So I'm moving away from class based components to functional components but am stuck while writing test with jest ... a blackbox while testing? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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573 views

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reactjs - How to comment JSX code out in .js files in VSCode?

Unlike in webstorm, I'm unable to comment JSX code out in .js files in the Visual Studio Code. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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562 views

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reactjs - create-react-app: how to use https instead of http?

I was wondering if anyone knows how to use https on dev for the 'create-react-app' environment. I can't see ... or else https://localhost:3001. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - What is public/manifest.json file in create-react-app?

I know that chrome extensions use 'manifest.json`, but here, it is used as something else as well. ... page update, but nothing changes. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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840 views

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reactjs - require is not defined

Im building a new React app but get the following error - "require is not defined" hello-world.html <! ... gives a totally different error. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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669 views

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reactjs - How to setup apache server for React route?

I have my react app running great on my local dev server but it did not work when I dump my production ... in the apache configuration? thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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reactjs - Warning: Each child in a list should have a unique "key" prop

I'm building an app using the google books API and I appear to be passing a unique key to each child in the list ... book.id}, I get this error. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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699 views

1 answer

reactjs - Can't import SVG into Next.js

When I try to import SVG Image then the following error shows. Which loader I have to use for importing SVG images? ./ ... ="19"/></g></svg> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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