I’m using multiple useEffect hooks to perform the componentDidMount and componentDidUpdate functionalities, however, looks like when component loads, all my useEffect fires initially… when my component mounts, I see all those console log there How could I only let my first useEffect fires, but the other three fires when the dependency changes only? Answer useEffect is not a direct replacement
Tag: react-hooks
How to prevent useCallback from triggering when using with useEffect (and comply with eslint-plugin-react-hooks)?
I have a use-case where a page have to call the same fetch function on first render and on button click. The code is similar to the below (ref: https://stackblitz.com/edit/stackoverflow-question-bink-62951987?file=index.tsx): The problem for me is the fetch function always triggers on any input changed because eslint-plugin-react-hooks forces me to declare all dependencies (ex: selected state) in the useCallback hook. And
Would a function component that uses useState hooks be considered as stateful component?
Would a component of type be considered as a stateful component by the definition? Or would be still a stateless functional component since it does not extend React.Component explicitly and does not declare a state with passing super(props)? Best regards, Konstantin Answer Stateless Component is when a component is purely a result of props alone, no state, the component can
react redux useSelector rerender even when data does not change
I am using react with redux and redux thunk. I have an action where I am making a network request. With the useSelector I am getting the data from redux store. I have a problem that the component rerenders every time when I dispatch the action. I want that the component only rerenders when data changes. I tried already use
Property ‘xxx’ does not exist on type ‘object’ when object is of unknown type
I am using Typescript in a react project which includes React Router (v6). React Router returns a location object from the useLocation() hook which has a property called “state”. State is an object which can be passed to any url and can have any properties you want. It simply has a type of “Object” because the user can set any
React Countdown Timer unable to make a stop function
I am practically new to React. In this App I am using Hooks! I’ve made a Countdown Timer that will show in a few seconds after logging in. I am unable to make it stop on a button click. I need some advise on this as I’ve been struggling for the past 2 days with this. This is my code
TypeError: (0 , _react.useEffect) is not a function
when in the development environment, my app works just fine. When in the production environment it crashes with the error: Uncaught TypeError: (0 , _react.useEffect) is not a function It happens in a file I created where I import React and useEffect like so: adding a console.log just below this line confirms that useEffect is indeed undefined when in production
react save possibility to select text with re-render component
i have component with text. It changed component own state with mouse click. But i want to save possibility to select and copy in by long click. Is there way to make it ? Selection is reset after rerender component. Code for example: Answer How about using onMouseDown and onMouseUp events yourself and calculate the time the user took to
What’s the best way to avoid react-hooks/exhaustive-deps?
I currently use the useEffect hook to run some function or update a variable as an effect of another value/variable being changed example: I am using the above code to update a variable after another variable has changed, however i keep getting the warning that React Hook useEffect has a missing dependency ‘types and obviosuly when i include ‘types’ as
My program is ‘skipping’ a fetch request, React.js
Its really weird. The first fetch I do works appropriately, but when doing the second fetch in my handleSubmit() method it sort of ‘skips’ it. It goes on, never enters the .then statements, doesn’t print an error. Ive tried with other APIs, but honestly it should work fine since the first take is almost identical and it worked. Ive tried