reactjs

问题 Unable to add multiple rows properly . Follow below steps: Click on sample excel sheet to download it. Once same sheet is imported all data is shown. Column values can be updated by clicking on its value and changing it. However When I add more rows, it appears twice and unable to change its column value by clicking on it. Even after adding rows to it. There is no key attached to that row as shown below: Before adding rows: After adding rows: Codesandbox link: https://codesandbox.io/s/github

问题 In my react app I want to send state to the next path through the history.location.state and history.location.pathname In my case, it has to push successfully and also showing in history but when I console.log(this.props.history) in the child page showing undefined. MyComponent Code import React, { Component } from 'react'; import { withRouter } from 'react-router-dom'; class MyComponent extends Component { state = { cart: { 1:{ icon: "URL" id: 1 quantity: 1 title: "item1" } 2:{ icon: "URL"

问题 In my react app I want to send state to the next path through the history.location.state and history.location.pathname In my case, it has to push successfully and also showing in history but when I console.log(this.props.history) in the child page showing undefined. MyComponent Code import React, { Component } from 'react'; import { withRouter } from 'react-router-dom'; class MyComponent extends Component { state = { cart: { 1:{ icon: "URL" id: 1 quantity: 1 title: "item1" } 2:{ icon: "URL"

问题 I am using react-dropzone to get files on my react application and i am trying to upload these multiple images using axios. Backend is in mongo+express. But, for some reasons, image is not being received at the backend. MY react code is: const data = new FormData(); data.append("title", entry.title); entry.images.forEach((image, index) => { console.log(image) /*This prints out File ​​ lastModified: 1599303132607 ​​ name: "name.jpg" ​​ path: "name.jpg" ​​ size: 41142 ​​ type: "image/jpeg" ​​

问题 In React-admin i am trying to implement a referenceinput. I see that the list api call is made and response is availble. however the selectinput component remains empty. I would appreciate any help. Table source column is notes . and reference resource is notes : <Create actions={<CoaActions />} title="New Coa" {...props}> <SimpleForm variant="standard"> <TextInput source="code" /> <TextInput multiline source="title" /> <TextInput source="iscashbook" /> <TextInput source="isbankbook" />

问题 First time using webpack as well as deploying using gh-pages. I cloned a webpack project from a udemy course. Instructor doesn't get into how to actually use webpack. It's telling me that [etc.]/build doesn't exist. When I create a build folder, I get the same error. package.json: "scripts": { "start": "node ./node_modules/webpack-dev-server/bin/webpack-dev-server.js", "build": "webpack -p --config ./webpack.production.config.js", "test": "mocha --compilers js:babel-core/register --require .

问题 I have a json file of strings that also need to have variables in them. (This is not by choice, by requirements) EDIT (for context) - All of the text within the web app is to be dynamic. Each component will have it's own key, with multiple key-value pairs such as: "component_one": { "heading": "Heading Text", "subheading": "Subheading Text", "list_item_one": "List Item Text", "list_item_two": "List Item Text", "list_item_three": "List Item Text", "button": "Button Text" }, where one or more

问题 I'm trying to implement JEST in my cra but I'm facing a problem : FAIL src/App.test.js ● Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom

问题 I'm trying to implement JEST in my cra but I'm facing a problem : FAIL src/App.test.js ● Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom

问题 Now as DatePicker doesn't include TimePicker, I am inclined to use @react-native-community/datetimepicker . But as written in its documentation, it doesn't includes a feature with which user can select date and time together. This is the code given in their documentation: const showDatepicker = () => { showMode('date'); }; const showTimepicker = () => { showMode('time'); }; return ( <View> <View> <Button onPress={showDatepicker} title="Show date picker!" /> </View> <View> <Button onPress=