In this post, we will see how to resolve why component re-render again even with useCallback? Question: I have a User Page that fetch the user info with a custom hook useFetchUserId(). This custom hook uses useEffect to fetch the ...

In this post, we will see how to resolve how to use useState like this? what does it mean? Question: Can anyone please explain me what const rerender = React.useState(0)[1] is this? I want to know what it means, i ...

In this post, we will see how to resolve Reactjs Child Component not updating Question: I’m having trouble updating the state of the child component. If i upload an image it doesn’t appear in the ReactChromakeyedImage component. (which is a ...

Question: I am passing functions to my child component. And I am using React.memo to restrict compoenent from re-rendering. But My component rerenders when parent re-renders. I tried to check why this is happening by using useEffect on all the ...

Question: I have a v-data-table. On a pop up, I select a few of the columns of the table and combine these values and add them back to the table as a new column. My problem is, I can’t re-render ...

Question: As a newbie in React, it seems that re-rendering of components is the thing not to do. Therefore, for example, if I want to create a menu following this architecture : App is parent of Menu, which have a ...

Question: I would like to improve component performance but after analysis of many components I got to know there is a very huge amount of re-rendering is going on with each component, is there any way to reduce the re-rendering ...

Question: I am trying to use update state in a react function component but it is not rerendering right away. My application takes an input for material cost of each product and calculates the total of that product. I would ...

Question: I have the following code. When changing the value of one element, the entire list is re-render. How can it be avoided by redrawing only one element? I use setState and class components. Sandbox: https://codesandbox.io/s/autumn-architecture-ubgh51?file=/src/App.js Answer: One way you ...