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Recent questions tagged ReactJS

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reactjs - In Relay, what role do the node interface and the global ID spec play?

I started out with the relay-starter-kit and also worked my way through the Relay and GraphQL ... official documentation. Thank you See Question&Answers more detail:os...

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

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917 views

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reactjs - Apollo GraphQL React - how to query on click?

In the Apollo React docs http://dev.apollodata.com/react/queries.html#basics there are examples of fetching ... do you call queries? See Question&Answers more detail:os...

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

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625 views

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reactjs - What is the quickest way to convert a React app to React Native?

This may be a naive question, but I couldn't find too much information on this topic. I have a fully functional ... to recycle most of the 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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648 views

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reactjs - Fetch API requesting multiple get requests

I would like to know how to fetch multiple GET URLs at once and then put the fetched JSON data into my ... into my rendering ReactDOM element? See Question&Answers more detail:os...

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

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686 views

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reactjs - How to set component default props on React component

I use the code below to set default props on a React component but it doesn't work. In the ... provinceList: PropTypes.array.isRequired, } See Question&Answers more detail:os...

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

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867 views

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reactjs - How to center a component in Material-UI and make it responsive?

I don't quite understand the React Material-UI grid system. If I want to use a form component for login, ... all devices (mobile and desktop)? See Question&Answers more detail:os...

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

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600 views

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reactjs - Should you ever use this.setState() when using redux?

Should you ever use this.setState() when using redux? Or should you always be dispatching actions and relying on props? See Question&Answers more detail:os...

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

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852 views

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reactjs - React proptype array with shape

Is there a built-in way to use proptypes to ensure that an array of objects being passed to a component is ... would be highly sought after. See Question&Answers more detail:os...

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

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657 views

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reactjs - create react app not picking up .env files?

I am using create react app to bootstrap my app. I have added two .env files .env.development and .env. ... .env.development or .end.production See Question&Answers more detail:os...

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

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646 views

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reactjs - When does create-react-app obfuscate or minify code?

I have kind of a basic question about webpack and react that I can use help with (around code obfuscation/ ... do with the source map? See Question&Answers more detail:os...

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

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643 views

1 answer

reactjs - Typescript React: Access component property types

npm package @types/react allows us to use React inside of our TypeScript apps. We define components as type Props = ... 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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561 views

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reactjs - When would bindActionCreators be used in react/redux?

Redux docs for bindActionCreators states that: The only use case for bindActionCreators is when you want to pass some action ... index }) } } } See Question&Answers more detail:os...

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

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614 views

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reactjs - ReactNative: how to center text?

How to center Text in ReactNative both in horizontal and vertical? I have an example application in rnplay.org ... module.exports = SampleApp; See Question&Answers more detail:os...

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

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667 views

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reactjs - When to use 'componentDidUpdate' method?

I wrote dozens of Reactjs files, but I never used the componentDidUpdate method. Is there any typical example of when ... , not a simple demo. See Question&Answers more detail:os...

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

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579 views

1 answer

reactjs - Why are Fragments in React 16 better than container divs?

In React 16.2, improved support for Fragments has been added. More information can be found on React's blog ... why? Would love some insight. See Question&Answers more detail:os...

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

0 votes

795 views

1 answer

reactjs - How does a redux connected component know when to re-render?

I'm probably missing something very obvious and would like to clear myself. Here's my understanding. In a ... bundled with the redux package. See Question&Answers more detail:os...

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

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578 views

1 answer

reactjs - React.Component vs React.PureComponent

The official React docs state that "React.PureComponent's shouldComponentUpdate() only shallowly compares the objects", and ... , if it helps. See Question&Answers more detail:os...

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

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912 views

1 answer

reactjs - Use spread operator to combine multiple arrays fetching data in React JS

I want to implement something like infinity scrolling on my application. This is my code: import React, { ... }; export default WithPromises; See Question&Answers more detail:os...

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

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868 views

1 answer

reactjs - XMLHttpRequest blocked by CORS policy when posting data to a Web App

I get a CORS error response when I tried to post my data to my Google Spreadsheet via a Web App. This ... PostData.product, PostData.price]); } 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

1 answer

reactjs - React ag-grid row auto height doesn't work

I was trying to implement the row auto height feature described in the docs here: https://www.ag-grid.com/javascript- ... ; } What am I missing? See Question&Answers more detail:os...

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

0 votes

616 views

1 answer

reactjs - 'Cannot read property 'map' of undefined' when using connect with mapStateToProps

I am trying to display my state (users) in my react/redux functional component: const Dumb = ({ users } ... : return state } } CodeSandbox See Question&Answers more detail:os...

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

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784 views

1 answer

reactjs - How access a secret from keyvault?

I created sample react login application where user can login by implict oauth2 login via azure ad by refering ... Keyvault Thanks in advance See Question&Answers more detail:os...

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

0 votes

749 views

1 answer

reactjs - React SSR blinks when starting client

simplifying my post: my ssr webpage blinks when starting client which means page renders server side rendered ... any suggestion or solution. See Question&Answers more detail:os...

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

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718 views

1 answer

reactjs - Pass values from children to parent component

I have two components : The first one is the parent Component which is a usual React Component. The second one is ... Can you help me please ? See Question&Answers more detail:os...

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

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854 views

1 answer

reactjs - Why my simple react component print console twice?

I made a simple components that number state 'a' is increased when the button is clicked. and I wrote ... the console.log exected twice? See Question&Answers more detail:os...

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

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616 views

1 answer

reactjs - Passing data to parent component in react

I've created on form in child component. After submitting that form using jquery ajax method ($.ajax) I am ... parent component? Thank you.. See Question&Answers more detail:os...

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

0 votes

785 views

1 answer

reactjs - how to use css in JS for nested hover styles, Material UI

I'm using Material UI and trying to convert normal css classes into js file. .nav { list-style-type: none; ... } }, any help is appreciated. 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

1 answer

reactjs - How to reset state of Redux Store when using configureStore from @reduxjs/toolkit?

I have seen solutions for clearing/resetting the store after logout but did not understand how to implement the same ... = messageType }, }) See Question&Answers more detail:os...

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

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