Advertisements I’m trying to create simple context provider in a project that uses TypeScript, typed as such: import { createContext } from ‘react’; export type ContextType = { foo: boolean, }; export const FooContext: React.Context<ContextType> = createContext({ foo: true, }); It looks simple enough, but on FooContext TypeScript is telling me that Type ‘Context<{ loading:… Read More Type inference error when creating a React Context

Advertisements I am practicing useContext hook with Next.js if it matters and created a small site that changes background color of <Paragraph></Paragraph> element for printing text and <Button></Button> element to change theme. I organized it with <Layout /> where button and paragraph are placed. As written in tutorial, I can place this theme change logic… Read More Button component doesn't work with useContext hook

Advertisements I have a user authenticated context, it has a logout function as well. I want to create a link on my nav bar that will just run the logout function, then after, redirect to the home page. However, i am getting an error saying Typerror: logout is not a function What I want to… Read More how to use a function from a context inside a nav bar?

Advertisements I Am using react. I have a fetch setup in an useEffect to grab the data from a database from the backend. It pulls the account and sends it back to the front where i can access it from there. From the File I want to access the user information i have a console… Read More How do i use this fetched data response?

Advertisements I know that if you have something like this… const [state, setState] = useState(‘some state’); and you are getting the warning for setState is never used, you should simply not useState, and instead, a normal variable. My question is, what if this is useContext instead of useState as shown below? I have this structure… Read More How to avoid "setState never used" when using useContext hook

Advertisements I been kinda stumped for a couple hours trying to figure out what to set as my default value on my createContext function. This is my code. // PetTypeProvider.tsx import { useState, createContext, useContext } from ‘react’; const PetTypeContext = createContext(”); const UpdatePetTypeContext = createContext((event:React.MouseEvent<HTMLElement>) => event); export function usePetType() { return useContext(PetTypeContext) }… Read More TypeScript React createContext() default value

Advertisements I am building a simple game in react. The problem is context is properly updated but the context value inside an event listener function is not updating. If I access the value outside the event function then the new updated value is rendered. For the first keyup event the value will be 0 but… Read More Context value not updating inside event listener in React

Advertisements Shortly, when I try to use useState with useContext in one of my components, all pages just disappear. UseState in some reason block my Routers and I have no idea why… Can you tell me where is my mistake? Some code below: Index.js export default function App() { const [value, setValue] = useState(false) —–>… Read More UseContext with React Router

Advertisements I’m new guy in this. I’m trying to make popup windows component but I need help for winish this. There is the start of popup component: the component get’s 2 props activity = true/false, and content = view component inside popup window So i have the state called "window" it need’s for changing visibility… Read More How to change the state of another component in React?

Advertisements I’m using the second answer of this post to implement a React context that can be updated from a child component. This is my code so far: app/authContext/index.tsx import React, { useState } from "react"; export const AuthContext = React.createContext({ auth: {user: null}, setAuth: () => {} }) export const AuthContextProvider = (props: any)… Read More How to implement jsx implementation of react context in tsx