I’m trying to immediatelly update a parent components’ state so I can properly use it in a Child (nested) component. I will try to give as many details as possible so you an understand. So basically I have a parent component (App.js): App.js (parent component) visual: This component has an array of objects (options) that is sent to the Child
Tag: react-hooks
ThemeProvider: “theme” prop is required. → React.js
🐛 Issue I created a Custom Hook to switch themes, but I’m facing this problem and I don’t exactly what could it be. Basically, when I try to change the theme, it works perfectly. But, after refreshing the page, it doesn’t stay with the correct one and gives me this error. ⚙️ Reproduce the issue You can reproduce this issue,
How to update a state when a prop changes, without rendering twice
I have a data visualization component that has “width” as one of the props. A state keeps track of the zoom level in the chart, and it is updated when handling mouse events. The zoom needs to adjust when the width changes. Currently, I’m doing this inside a useEffect hook: But this makes the component render twice: once for the
Can’t perform a React state update on an unmounted component with fetch POST method
I get this warning when i use my fetch post method how can I cancel all subscriptions and asynchronous tasks in a useEffect cleanup function.With my Post methods. Warning: Can’t perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks
React Hooks: useState updater function: Why does this hook remove the object upon drag?
I have a marker on a map which takes this function upon dragging: That function fires another function updateUserMarker, which is coming from a component via context: It consumes the index, a new object which contains updated lat and long from the event, & appends an id which will also be from the event. In the context component, I have
unable to update hooks variable when fetching multiple urls in react
I am trying to store data from the TMDB movie api using a custom react hook . useFetch.js When I console.log({promises}) I get this object where the 2 items are the movie types with 20 movies inside : And then when I try to display the movies from the object above in another component : MovieList.js I get nothing no
material-ui : enable the dark mode automatically
As per the documentation: It says dark mode theme will be generated automatically and get reflected in UI, but it is not working for me. Code: Signup.js Background is not getting dark with the type. Can someone help with this? Answer My bad. The latest version of Material UI now uses mode attribute of palette to determine whether dark mode
How can I conditionally map multiple arrays with if statements after fetching an array of objects? (React)
This is all in Prescriptions.js I am fetching a bunch of prescription drugs from my api. After that’s done, I want to make a category array based on drug.class and render it down there. If that category already exists, then push the drug into it’s category’s array, if it doesn’t, make a new array based on that category, push the
react context is giving undefined object
In my react application I am trying to use context api. In my component I am importing the context but it is giving error that object can not destructure the property. I am trying to implement cart functionality in my app. I am using hooks. ImgContext.js ImageGrid.js Answer You are not providing a a default value when creating the context.
State Not Getting Set As Required (React, Hooks)
I am having trouble setting up a state of my component. Kindly check the details as below Codesandbox link – https://codesandbox.io/s/goofy-glade-z32zp This is my App Component containing 4 sub components Checkbox Radio Select NouiSlider Coming to the problem whenever I try to set state from the radio checkbox or select it does set the state and updates correctly via setAnswerState