Recent questions tagged Reactjs

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reactjs - Warning: It looks like you're using the development build of the Firebase JS SDK

I've integrated Firebase into my React.js app as such: https://firebase.google.com/docs/database/web/start fire ... That results in 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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reactjs - material-ui Drawer - findDOMNode is deprecated in StrictMode

I have a simple ReactJS app based on hooks (no classes) using StrictMode. I am using React version 16.13. ... for this problem? 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 - What does 'Only a ReactOwner can have refs.' mean?

I have a simple react component with a form in it: var AddAppts = React.createClass({ handleClick: function() { var ... to do to fix this issue. 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 - When do I choose React state Vs Redux Store

I've been learning Redux and a part I'm unclear of is, how do I make a determination between using react ... . Can someone please help? 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 - webpack can't find module if file named jsx

As I write webpack.config.js like this module.exports = { entry: './index.jsx', output: { filename: 'bundle.js' ... named *.jsx can't be 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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reactjs - How do I access refs of a child component in the parent component

If I have something like <Parent> <Child1 /> <Child2 /> <Child3 /> </Parent> And I want to access from ... "child2refs", how can I do that? 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 - Safe alternative to dangerouslySetInnerHTML

I would like to have a dynamic blog on my site (which uses React). Initially, I was going to store the posts ... ). I'm open to suggestions. 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 - React Native / Xcode Upgrade and now RCTConvert.h not found

App ran fine on React Native 0.35.0. After updating to 0.40.0 via react-native-git-upgrade I get a number ... , but that hasn't fixed anything. 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 - Remove console.logs with Webpack & Uglify

I am trying to remove console.logs with Webpack's Uglify plugin but it seems that Uglify plugin that comes ... that drop_console isn't working. 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 - Load local images in React.js

I have installed React using create-react-app. It installed fine, but I am trying to load an image in one of my ... what I am doing wrong here. See Question&Answers more detail:os...

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

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589 views

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reactjs - React: Parent component re-renders all children, even those that haven't changed on state change

I haven't been able to find a clear answer to this, hope this isn't repetitive. I am using React + Redux ... ? What is the right approach here? 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 - Visual studio code changes format (React-JSX)

I've the following snippet in my index.js class App extends Component { render() { return ( <div style = { ... } How can I solve this? 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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624 views

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reactjs - React.useState does not reload state from props

I'm expecting state to reload on props change, but this does not work and user variable is not updated on next useState ... ...</p>); } codepen See Question&Answers more detail:os...

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

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851 views

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reactjs - Sending the bearer token with axios

In my react app i am using axios to perform the REST api requests. But it's unable to send the ... recommend any other module with react? See Question&Answers more detail:os...

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

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1.4k views

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reactjs - What does the error "JSX element type '...' does not have any construct or call signatures" mean?

I wrote some code: function renderGreeting(Elem: React.Component<any, any>) { return <span>Hello, <Elem />! ... signatures What does it mean? See Question&Answers more detail:os...

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

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556 views

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reactjs - How to implement pagination in React

I am new to ReactJS and am creating a simple TODO application in it. Actually, it is a very basic app with no ... be appreciated. 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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502 views

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reactjs - Should flux stores, or actions (or both) touch external services?

Should the stores maintain their own state and have the ability to call network and data storage services in ... recommended over the other? See Question&Answers more detail:os...

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

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461 views

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reactjs - What's the right way to pass form element state to sibling/parent elements?

Suppose I have a React class P, which renders two child classes, C1 and C2. C1 contains an input field. I'll ... element. How should I 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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593 views

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reactjs - React - Display loading screen while DOM is rendering?

This is an example from Google Adsense application page. The loading screen displayed before the main page showed ... and react-loading-screen. See Question&Answers more detail:os...

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

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949 views

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reactjs - React Hook : Send data from child to parent component

I'm looking for the easiest solution to pass data from a child component to his parent. I've heard about using ... want to use redux for that. See Question&Answers more detail:os...

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

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1.5k views

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reactjs - React Child Component Not Updating After Parent State Change

I'm attempting to make a nice ApiWrapper component to populate data in various child components. From everything ... I missing something here? See Question&Answers more detail:os...

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

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466 views

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reactjs - Internal implementation of "makeStyles" in React Material-UI?

The purpose of this question is to understand what is happening under the hood. Every time I found the code with ... <Theme, Props, ClassKey>>; See Question&Answers more detail:os...

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

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581 views

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reactjs - React functional component using state

I'm trying to implement a React smart component using functions as shown here https://hackernoon.com/react-stateless- ... {Title: 'Login'}; See Question&Answers more detail:os...

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

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656 views

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reactjs - How to add custom Material-UI palette colors

I'm trying to establish my own palette colors to match my branding in Material-UI. So far I can only ... default withStyles(styles)(App); See Question&Answers more detail:os...

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

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1.3k views

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reactjs - Cannot read property 'history' of undefined (useHistory hook of React Router 5)

I am using the new useHistory hook of React Router, which came out a few weeks ago. My React-router version is 5.1. ... > </Route> </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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606 views

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reactjs - Invariant failed: You should not use <Route> outside a <Router>

I use react-router-dom for routing in my React application. Part of my app extracted in another package. List of ... .getElementById('root'), ); 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 - Use history.push in action creator with react-router-v4?

The only working method that I found to work this out without using react-router-redux to route from action creator ... way to work this out? See Question&Answers more detail:os...

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

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499 views

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reactjs - React Native project, index.ios.js or index.android.js not generated

I started with React-Native today. And I am following a web tutorial. Did all the installations correctly on my ... following is of Jan 2017) See Question&Answers more detail:os...

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

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