I am trying to make a react example project with a way to add a ‘project’, edit its contents, view, and delete it. Just to practice with setting/changing/saving data. I’m debating if I should make this as a functional or class component, so currently I am trying with a functional component below: https://codesandbox.io/s/quizzical-moore-5s77l0?file=/src/Projects.js:568-570 import React,… Read More react functional component state object not rendering in display on change

I’m trying to make a code where I want to action on onPress button to assign a screen or section where my scroller should go as I wanted, the below code is perfectly coded using class component, but my entire code Im coding is in functional components and i have no idea how to convert… Read More onPress button scroll to specific section in functional component

I’ve been reading on why useRef is useful (e.g. in this SO answer and in the articles it links to) and it does make sense to me. However I notice that in my code I’ve "simply" solved the issue of how to store state in a functional component in a way that does not trigger… Read More useRef versus a file-scoped variable

I’m trying to update value in react functional compoenent through input element but after the first value I’m unable to type My Code: import React from "react"; import "./App.css"; const { useState } = React; function App() { const [items, setItems] = useState([ { value: "" }, { value: "" }, { value: "" },… Read More react functional component: After first value not able to continue type the value in input element

I’m currently learning react.js and I just want to ask a question on how to properly create an event handler function inside a function component. Pardon me since most examples in the official documentation are using class for this types of components. I have an example code below that seems to work fine, but I’m… Read More What is the proper way to create an event handler inside a React function component?

import React, { useState } from ‘react’ const App = () => { const [count, setCount] = useState<number>(0); const [otherCount, setOtherCount] = useState<number>(0); const increment = () => { setCount((pre) => { return pre + 1 }) } const decrease = () => { setOtherCount((pre) => { return pre – 1 }) } return (… Read More usage of React.memo() inside components with prop functions

I have a component which receives a list of items through props. It looks like this: const component = (props) => { return ( <ul> {props.list.map((item) => ( <ListItem key={item.Id} title={item.title} imgSrc={item.img.url} /> ))} </ul> ); }; edit: and the child looks like this: const ListItem = (props) => { return ( <li key={props.key}> <h4>{props.title}</h4>… Read More react.js error handling inside functional component

I have checked on blogs and other stack overflow questions for this. The answer is quite simple and clear, but doesn’t seem to work for me. I am using functional component, I tried to use both localStorage and sessionStorage for a simple counting app. The app still works but the count state defaults back to… Read More Persisting state on browser reload not working in react

Trying to learn some Typescript and have encountered an error early. I’m getting quite a few errors although I’m following a tutorial. I have commented out the errors I’m receiving. If someone could please explain why they are occurring, and how to fix them that would be fantastic. import React from "react"; interface IProps {… Read More 'string' is declared but its value is never read