Reactjs – Cleaning up state on useEffect hook
Can someone give me a light on what may be happening here? I have an effect that basically, when I load a product page it updates an state with an array of items, but when I change the product (a…
Javascript – Vue – Change state from 'watch' callback
I'm playing around with Vue, and I've seen you can set up a 'watch' callback for when a piece of Data changes: <template> <div class="hello"> <h1>{{ msg }}</h1> <input v-model="inputVal" placeholder="edit me" /> <p>{{ inputVal }}</p> </div> </template> <script> export…
Reactjs – React: useReducer dispatch's callback
I have a reducer for a state. When the reducer's dispatch is called, I need to get the newly created item. Alternatively I need a callback for the dispatch, so I can perform further actions AFTER the dispatch has completed.…
Javascript – React – const changing with state but I don't want it to
I'm facing this issue in react: I have an array in a state and I also need to track it's length so that I can know when it's been modified. const [myArray, setMyArray] = useState(["Some Value", "Some other value"]); const…
Reactjs – Sharing values between pages react- context not working
I have a react project where a user is able to input a value within the Searchbar.js file, which is then return the data from an api call on the Shop.js file. What I am trying to do is get…
Javascript – AlpineJS: How to create and update global props
I'm new to AlpineJS. I have some production knowledge of React and some basics of Vue. But one of the things I'm not getting about AlpineJS and I did not find a direct answer to this from any of the…
Javascript – unable to change the specific key value of object using state in react
in app.js in which i have used single state to keep track of object with two key values but when i am selecting game its working fine but when selecting for day it is giving me error pls help how…
Javascript – How to update state so it's reflected in child components
I am learning React and now I am making a very basic shopping list app. I wanted to increment the amount of existing items in the list, instead of adding duplicating items (with the same name). I have the following…
Reactjs – React rerendering
I have component const ComponentA: React.FC<ComponentAProps> = (props) => { const [invalidFields, setInvalidFields] = React.useState([]); return ( <ComponentB invalidInputs = {inavlidFields.length !== 0} /> ) Does component B rerender when the state invalidFields changes?
Javascript – How to call a function after a variable assignment completes in Typescript?
Similar to other questions not not quite the same: I have a variable assignment which involves calling a function that takes a significant amount of time to run, and I want to trigger a function after that assignment finishes. (The…