Currently I have four contexts that wrap all my routes (as shown bellow) so that I don’t have lost providers all around my app screens and components. As far as I know, when I modify the value of a context variable, every component that uses it will update too, what can lead to memory problems, but my question is: if
Tag: react-context
Changing the state of a context within an if-else in JavaScript
I tried making a global state by using a Context and have the following for my AuthProvider.js file I want to be able to change its boolean state within an if-else instead of a button with an onCLick event in the tutorial but it shows an error in the console: setAuth is not a function my App.js is below index.js
ReactPage showing blank screen – can’t figure out the error
I’m trying to re-write my existing code which was making use of props chaining with the help of React Context API I will include the context file and other important files aswell I have been stuck since an hour trying to figure out where I went wrong but unable to figure it out App.js file auth-context.js file Login.js file Answer
Uncaught TypeError: Cannot destructure property ‘xxx’ of ‘useAuth(…)’ as it is undefined
Working with React Context and Hooks I am creating a provider called AuthProvider and from the useAuth Hook I call that context to work with it. I have a component called Login in which I call my Hook to access the AuthProvider as follows: In AuthContext I have the variable “hello” that I pass to the children of my context.
How to prevent useEffect() run twice after running a function in context consumer and prevent useContext() to re-render
I’m learned that React will re-render after state changed e.g. setState from useState(), calling the function or variable from useContext() variable. But now I’m don’t understand that why I get the ESLint warning call the context function inside the useCallback() without dependency in the list. If I put the dependency in the list, useCallback() will be re-rendered and useEffect() dependency
Why am I getting undefined prop?
Below is my Header component in react: I have used ContextAPI for efficient state Management.CryptoState is used for this purpose.I have imported the state in Header and getting the necessary props using object-destructuring. Below is my Context-file: I am getting this error in Header component:Header.js:8 Uncaught TypeError: Cannot destructure property ‘currency’ of ‘(0 , _CryptoContext__WEBPACK_IMPORTED_MODULE_1__.CryptoState)(…)’ as it is undefined. Answer
Change React Context without triggering a re-render
I have a download dialog that you can click on to download the graphics on my website. Because the graphics are created with HTML Canvas, I cannot simply download an array of image links. I have to contact each of the components and render each of them into a data URI. On my app component, I have defined a context
How to add “`Context“` with routes set up?
I want to add the searchContext context in my App.js so that my Navbar an Results components have access to the variables in it. How would I do this with my routes set up? I tried to just add with with them but that didn’t work. This is the code. Edit: Added “// Another route that has nothing to do
Maximum Call Stack Size exceeded and ENOENT error while using context
I get this error whenever I try to use React context,provider or useContext, any of them causes this On App: On terminal: Answer Path to context is wrong. Basically I import ContextFile.js to index.js, and from index.js access to many things. index.js was importing Context from itself, and not from ContextFile. At fist when I corrected the files, it didn’t
React: How to use multiple Contexts of the same type while allowing children to read data from all of them
I have a certain Context setup similar to this And child components that use it like this Now I need to do this Need to provide all parent context’s data of one single Context definition to a set of children I know useContext can only read the closest parent of a given ContextType, so I’m not sure of how to