I’ve a series of user data elements which I’m collecting inside a React component using hooks. Each of these are updated as follows. Is there a more succint way to do this using an object as the variable? Answer You should add name attributes to input tags. Each name must refer to key in AllValues object.
Tag: react-hooks
`useState`, only update component when values in object change
Problem useState always triggers an update even when the data’s values haven’t changed. Here’s a working demo of the problem: demo Background I’m using the useState hook to update an object and I’m trying to get it to only update when the values in that object change. Because React uses the Object.is comparison algorithm to determine when it should update;
Definition for rule ‘react-hooks/exhaustive-deps’ was not found
I am getting the following eslint error after adding // eslint-disable-next-line react-hooks/exhaustive-deps in my code. 8:14 error Definition for rule ‘react-hooks/exhaustive-deps’ was not found I referred to this post to fix this but the solution mentioned doesn’t work in my case. Any clue how to suppress this eslint error? PS I’m using standardjs in conjuction. Answer Not a perfect solution
Debouncing / throttling a callback in React using hooks without waiting for the user to stop typing to get the update
I’m using React 16.8.6 with Hooks and Formik 1.5.7 to build a form with a preview of the content that will be generated with that data later on. The form runs fine on its own, but as long as I render the preview as well, everything becomes a bit slow and sluggish. I’ve fixed that debouncing the onChange of the
What’s the purpose of the 3rd argument in useReducer?
From the docs: [init, the 3d argument] lets you extract the logic for calculating the initial state outside the reducer. This is also handy for resetting the state later in response to an action. And the code: Why would I do that over reusing a constant initialState? Looks less verbose to me. Answer EDIT july 2020: React documentation has now
Why use `useTable` over `ReactTable` when using react-table
On their npm page, the example shows the usage of <ReactTable> component: However, on their API Docs and examples, they all use useTable. So, my question is: Why would someone use hooks(useTable, useFilters, and etc…) and make Table component when he/she can just use a that’s already provided. I’m pretty sure they didn’t forget updating their npm page’s example… or
setState only setting last input when using object as state
Im trying to create a form with React. This form uses a custom Input component I created various times. In the parent form Im trying to get a complete object with all names and all values of the form: For this, I created a ‘component updated’ hook, that calls the function property onNewValue to send the new value to the
How to change useState’s state without re-rendering the component, but just its components
How do I change the useState without re-rendering it but just its components? Why I need is because I have some logic that changes the useState in Comp1. If I would re-render Comp1 I would have to recalculate its value. But if the change happens I still would like to re-render its components. Edit: bigger code snippet. Answer I took
React Hook “useEffect” is called conditionally
React is complaining about code below, saying it useEffect is being called conditionally: And that returns me the error: React Hook “useEffect” is called conditionally. React Hooks must be called in the exact same order in every component render. Does anyone happen to know what the problem here is? Answer Your code, after an if statement that contains return, is
Invalid hook call. Hooks can only be called inside of the body of a function component
I want to show some records in a table using React but I got this error: Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons: You might have mismatching versions of React and the renderer (such as React DOM) You might be breaking the