Recent questions tagged reactjs

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I'm missing something. Here's a very simple hello world, the goal is to just fire an alert event ... document.getElementById('container')); 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 - Webpack import bootstrap .js and .css

I am building an app using react, bootstrap and webpack using es6 with babel. But I can't import ... import boostrap or configure webpack? 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 - Material UI Menu using routes

I am toying with material-ui. I implemented LeftNav using routes, but I could not find a way to get IconMenu, ... ' as property as LeftNav does. 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 - Warning: Prop `className` did not match. when using styled components with semantic-ui-react

I use this code to margin my Button from top: const makeTopMargin = (elem) => { return styled(elem)` && { ... produced here. What should I do? 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 - Trace: The node type SpreadProperty has been renamed to SpreadElement at Object.isSpreadProperty

I'm launching a react app, and here's my Webpack configuration: 'use strict' const ExtractPlugin = require('extract- ... I get rid of this rows? 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 16: Warning: Expected server HTML to contain a matching <div> in <body>

Since upgrading to React 16 I get this error message: warning.js:33 Warning: Expected server HTML to contain a ... how can it be fixed? See Question&Answers more detail:os...

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

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985 views

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reactjs - DatePicker in Redux Form

i'd like to use DatePicker for selecting date using redux form. I create this: import React from 'react'; import ... the field What should i do? 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 - Using google sign in button with react 2

This is essentially the same question as Using google sign in button with react but the accepted answer does not ... instead of the default one? 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 listen to localstorage value changes in react?

I want to show a button when user is logged.If user is not logged then I m not showing button.When user logged i ... </div> </section> ) } } 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 - Calling setState() in React from render method

I am trying to reset React state variables (to default values) in a container using setState() method. But getting ... ){ this.resetMsg(); } See Question&Answers more detail:os...

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

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982 views

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reactjs - React CSS - how to apply CSS to specific pages only

I am using create-react-app and I am trying to work out an "efficient" way to apply stylesheets to ... limitation when using JS styles. See Question&Answers more detail:os...

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

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902 views

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reactjs - Why React event handler is not called on dispatchEvent?

Consider the following input element in a React component: <input onChange={() => console.log('onChange' ... events without TestUtils.Simulate? 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 achieve callbacks in Redux-Saga?

The scenario is, I want to redirect a user or show alert based on the success, error callbacks after ... ACTION_TYPES.LOGIN_REQUEST, params } } See Question&Answers more detail:os...

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

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1.1k views

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reactjs - How to adjust font size to fit view in React Native for Android?

How I can make the font size of the text auto change inside a view in react native? I have ... components like button and touchableopacity? See Question&Answers more detail:os...

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

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824 views

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reactjs - How do I define methods in stateless components?

If I simply have: const App = function() { return ( <div>{this.renderList()}</div> ) } How do I define the ... () {}. What's the right syntax? See Question&Answers more detail:os...

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

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922 views

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reactjs - How to specify a constructor with a functional component (fat arrow syntax)?

Given this component: import React from 'react' import ReactDOM from 'react-dom' import PropTypes from 'prop ... extends React.Component syntax? See Question&Answers more detail:os...

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

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1.1k views

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reactjs - Passing function as a param in react-navigation 5

NOTE: This query is for react-navigation 5. In react navigation 4 we could pass a function as a param ... calling_code: calling_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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1.3k views

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reactjs - Fragments giving Unexpected token error in React 16.2

I have the following component that renders a series of components. However, I downloaded React 16.2 and tried to use ... AnswersCard} </> ) } } 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 compress build with/without ejecting create-react-app. Also include compressed file into script tag into index.html

I'm using react-scripts build to make production ready build and to deploy it on AWS server I'm using ... gzipped files would be served. See Question&Answers more detail:os...

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

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1.1k views

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reactjs - Why can't useEffect access my state variable in a return statement?

I don't understand why my useEffect() React function can't access my Component's state variable. I'm trying to ... 's going on here. Thanks. See Question&Answers more detail:os...

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

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819 views

1 answer

reactjs - Use components from two versions of the same library (npm / Material UI in my case)

I'm using the latest stable version of Material UI in my production React app. I need the updated Data ... through NPM? 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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797 views

1 answer

reactjs - React-router 2.0 browserHistory doesn't work when refreshing

Below codes report 404 not found when refreshing on page http://localhost/about. But if browserHistory is changed ... prototype' of undefined'). See Question&Answers more detail:os...

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

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1.7k views

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reactjs - React - Jest - Enzyme: How to mock ref properties

I'm writing test for a component with ref. I'd like to mock the ref element and change some properties but ... ('elmHeight')).toEqual(100); See Question&Answers more detail:os...

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

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954 views

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reactjs - webpack umd lib and external files

I want to package my react component as a umd lib. below is webpack my setting: module.exports = { devtool: ' ... have any idea of this? thanks. See Question&Answers more detail:os...

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

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892 views

1 answer

reactjs - webpack umd lib and external files

I want to package my react component as a umd lib. below is webpack my setting: module.exports = { devtool: ' ... have any idea of this? thanks. See Question&Answers more detail:os...

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

0 votes

1.0k views

1 answer

reactjs - React - Jest - Enzyme: How to mock ref properties

I'm writing test for a component with ref. I'd like to mock the ref element and change some properties but ... ('elmHeight')).toEqual(100); See Question&Answers more detail:os...

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

0 votes

860 views

1 answer

reactjs - webpack umd lib and external files

I want to package my react component as a umd lib. below is webpack my setting: module.exports = { devtool: ' ... have any idea of this? thanks. See Question&Answers more detail:os...

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

0 votes

956 views

1 answer

reactjs - How to adjust font size to fit view in React Native for Android?

How I can make the font size of the text auto change inside a view in react native? I have ... components like button and touchableopacity? See Question&Answers more detail:os...

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

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