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 o…
Tag: state
Why my data is flickering between previous and new when state is updated in ReactJS?
I’m working on a SPA with data fetch from the Star Wars API. In the characters tab of the project, the idea is to display the characters per page and you can click next or prev to go to page 2, 3, etc. That works, but! the character names flicker everytime the page changes, it doesn’t happen after…
Why do Material UI tabs stop working when I use a .map to populate the content dynamically instead of hard coding?
I have implemented Material UI’s tabs successfully by hard-coding the content, but when I tried to make a my hard coded tabs with a .map function to populate the content from a data source (simple json), it no longer works. Can anyone see why? The only change I made was to the MyTabs component below whe…
setState for react function component not updated my state
I’m setting state for start and end date of checkin and checkout date. I got validDateRange which is an array of valid date and length. Try to set the state of total to the length of array multiply with the price of the room but somehow react not updating my total state. The log of totalCost is totally …
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 …
I get an Error from React: Maximum update depth exceeded
I wrote my codes and i think everything is right but i get an error from react.js Error: Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops. App.js: User…
How to update nested array in React state?
I am trying to update my state so that a nested array gets emptied but the rest of the state stays the same. My state object looks like: And I the closest I get to working is: The console warning I get with this approach is: But how else is this possible? Many thanks 🙂 Answer The first problem I
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 c…
Component doesn’t update once the parents state is changed
I’m attempting to get a timer to call a function quickly at first and then slow down. I have a TimeInterval state that increases and is passed down to my countdown component as a prop Countdown Component My TimeInterval state is working properly and will increase as NextSelection() is called. However th…
Creating unique key props for array children (React.js)
I am trying to build out a component in React which takes information from a JSON source, and uses some of that information to create states which can be passed down into other separate components. While I haven’t passed my states into separate components yet, I have been able to get my state to update …