reactjs

问题 I want to customize the expansionpanel in material ui.I see that the data i want to render on expansion panel takes too much space because of the default styling of the expansion panel. <ExpansionPanel defaultExpanded={isCurrentInning}> <ExpansionPanelSummary classes={{ expanded:classes.expandedPanel }} expandIcon={<ExpandMoreIcon className="label"/>}> <div className={classes.inningInfoContainer}> <div className={classes.teamNameOrderContainer}> <span className="label"> <img src={image} width

问题 I want to use React in a CMS. With js I inject React into a div that displays something comming from React. That works well but only because React creates the inputfields too. Now I need the CMS create the input fields and want to attach an event to the created input in the CMS template. <input type="number" onchange="exposedReact()">something</input> In react I would have somewhere definied a function: const [number, setNumber] = useState(0); const exposedReact = (e) => { setNumber(e.target

问题 I want retrieve all post then with each post there is a uid, using this uid i want to retrieve user information My code is like this but it is not working and state is not changing in then block getAllPost(){ let allPost = firebase.database().ref("all-post"); let postAll = []; allPost.once("value").then(data => { data.forEach(function (childSnapshot) { let childData = childSnapshot.val(); childData.postId = childSnapshot.key; let userInfo = firebase.database().ref(`users/${childData.uid}`);

问题 I want to customize the expansionpanel in material ui.I see that the data i want to render on expansion panel takes too much space because of the default styling of the expansion panel. <ExpansionPanel defaultExpanded={isCurrentInning}> <ExpansionPanelSummary classes={{ expanded:classes.expandedPanel }} expandIcon={<ExpandMoreIcon className="label"/>}> <div className={classes.inningInfoContainer}> <div className={classes.teamNameOrderContainer}> <span className="label"> <img src={image} width

问题 I'm trying to set up React App for IE 9+ browsers. Here is my current src. package.json { "name": "react-ts-template", "version": "0.1.0", "private": true, "dependencies": { "@testing-library/jest-dom": "^4.2.4", "@testing-library/react": "^9.3.2", "@testing-library/user-event": "^7.1.2", "@types/jest": "^24.0.0", "@types/node": "^12.0.0", "@types/react": "^16.9.0", "@types/react-dom": "^16.9.0", "@types/crypto-js": "3.1.44", "react": "^16.13.1", "react-dom": "^16.13.1", "react-scripts": "3.4

问题 I am trying to generate a custom image for my CircleMarkers. I am not sure how to do it. I am using CircleMarkers here because I have almost 20K+ markers and need them for performance. I can't quite figure out how to pass a custom image to the CircleMarker. Any help on this is much appreciated. 回答1: There is no way to do this directly. APIs of leaflet.js or react-leaflet libraries do not respond to your request. You can do this by placing an extra marker child component in CircleMarker and

问题 As we know, there are a lot of questions in this community about npx create-react-app , but none of them couldn't solve my problem. I had used npx create-react-app several times and I didn't have any problem with it, but from a couple of days ago when I run this command, my project is created but in its folder, there isn't any files and folders that I expected to exist in it (except node_modules, package.json, and yarn.lock). For solving my problem, I updated Node.js and uninstall and

问题 I am new to react and stuck at this point. I am doing an async API call in action dispatcher to fetch a list of patient data.Once the data is returned I need to render it in ag grid. This is my code: import React, { useEffect, useState } from 'react'; import { connect } from 'react-redux'; import { fetchPatientsStartAsync } from '../../redux/patients/patients.actions'; import { PatientContainer } from './patients.styles'; import { AgGridReact } from 'ag-grid-react'; import 'ag-grid/dist

问题 This question already has an answer here : change displayName of the currentUser in firebase [closed] (1 answer) Closed 10 months ago . I want to update displayName of the current user and display it on screen. firebase .auth() .createUserWithEmailAndPassword(email, password) .then((response) => {response.user.updateProfile({displayName: 'John Doe'}),response.user.reload()}) .catch(error => Alert.alert('', error.message)); console.log(firebase.auth().currentUser.displayName); using this code

问题 I would like to select an item from the dropdown list and would like to set the state of staffId to it. I would like dropdown to show the name, but after I select the name, set the staffid to state. I would also like to achieve this without hardcoding the values in an if-else loop as I have thousands of data to work with. This is the data fetched from WebAPI and stored in a state called items this.setState({ items: dataSource staffId: '' }) This state of items will be this. [ {"departmentName