I want to call a function at regular intervals and update state inside it. I started with a useEffect but eventually ended up here. I tried using Ref.current to store the interval and clear it every time in the function…
I'm receiving this error after trying to create a form in react: Invariant Violation: View config getter callback for component must be a function (received undefined). Make sure to start component names with a capital letter. This is code: import…
I created an context in React app which uses fetch api to connect to my server on localhost. I submit the form using handleClick function which calls the addNote function of the context. The addNote function then uses fetch to…
I am creating a table in React that has multiple rows. For each row there will be a React component underneath called AutoShopPricesExpanded that has more details about that row's prices. When I click on a single row I want…
I have a state formData in which mappedColumn is one of the object as below const [formData, setFormData]=useState({ mappedColumns:[ { source:"MAIN SOURCE", target:"MAIN TARGET", transformationValue:"MAIN VALUE" } ] }) var targetIndex = 0; let mappingConfig = [...formData.mappedColumns]; var mIndex =…
'use client' import React, { useCallback, useEffect, useRef, useState } from 'react' import { Observer } from 'gsap-trial/Observer' import gsap from '@/utils/gsap' type Props = {} const TestPage = (props: Props) => { const [test, setTest] = useState<number>(0) const testFunc…
I want to only show values greater than 0 on each row. I tried filtering for black > 0 etc but it removed the whole row, whereas i just want to make a 0 into an empty string essentially. Here…
I am very new to React and I am trying to get an image of a shirt onto the website. No error pops up, but the shirt just doesn't show up. Here is my 'index.jsx': import { Canvas } from…
So here's the code I'm confused about: import React from "react" export default function App() { const [starWarsData, setStarWarsData] = React.useState({}) console.log(starWarsData) React.useEffect(function() { fetch("https://swapi.dev/api/people/1") .then(res => res.json()) .then(data => setStarWarsData(data)) }, [starWarsData]) return ( <div> <pre>{JSON.stringify(starWarsData, null, 2)}</pre> </div>…
UseCallback(), are function paramaters always added ot the dependency array in default? whereas variables used directly wihtin the function's body should only be added if I am sure they would be updated? const User = ({}) => { const [state,…