What is difference in writing in two different ways below? function App(isTrue){ if(isTrue) return <ComponentA/> else return <ComponentB/> } // what is different if I write like this function App(isTrue){ return(<> {isTrue && <Component/>} {!isTrue && <ComopnentB/>} </> ) }
I'm building a React application where I have a parent component that holds the state and several child components that need to receive and update this state. I'm using props to pass the state and a callback function to update…
I am studying Front end development and am writing simple shopping cart in React to learn. When I change product quantity I want to create an object of quantity values by product id and pass them to shopping cart component…
Lets say I have a parent component called and I create a useState in it called [value, setValue]. I pass the value and setValue to a child component through props. Please note that the function setState is not used in…
I`m learning React and I do not understand - why in first render React generate correctly value playerSymbol, but when It changes it is not re-render even when gameBoard changes. Code: import { useState } from "react"; const initialGameBoard =…
I have a JS library (Cytoscape) inside my React component. The library need to be handled events with set event handler functions (on diagram/ component initilazation). The problem is that inside these events the state is stale - it only…
I have been learning React recently, I tried to build a small web-app for learning React. I have doubt regarding the state management. I am not using anying library for state management now and also I am not using any…
React Native developers, I am looking for guidance for future projects in React Native. I have previously worked with Flutter and I find similarities between the two technologies, I was wondering if there are specific aspects of React Native that…
import React, { useState } from "react"; import Form from "./child/form.js"; import Details from "./child/details.js"; function App() { const [inp, modifyInp] = useState([]); const inputHandler = (input) => { modifyInp((prevState) => [{ ...prevState, ...input }]); }; console.log(inp); return ( <div>…
I have a page for listing products in a table, each row of the table has checkbox who meant to toggle the row's active (Boolean) state when it clicked. The problem is that after updating the state the DOM doesn't…