I have a package.json script like: It has build:rss which points to ./.next/server/scripts/build-rss.js but it cannot find it on Vercel. How do I point it correctly on Vercel? I get the following error & cannot deploy my site: I tried asking Vercel support but they said: I recommend doing something like t…
Tag: reactjs
setInterval keeps on running after clearInterval called
This is a snippet of the code: I checked the solutions suggested in other posts but none of them is working. Answer You can use state value to track and keep id of interval. Check below for detail.
Remove hover effects when scrolling
I have been working on an application. There are multiple components on the page. The content inside them is scrollable. The expected functionality is when I scroll inside the component the hover effects on different elements should be disabled. After searching in the internet I have a working solution. I hav…
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…
Emitting custom event in React
In Vue.js we can emit custom events along with a parameter like and then we can listen to this event on the parent component like How can we do that in React? Answer As @usafder, mentioned the way. I am just adding the basic callback function for an input field. So on the console you can see the current value…
TypeError: Cannot read property ‘map’ of undefined while creating a dropdown select in react
I’m trying to create a dropdown select list that is dependent on it’s parent list i.e Category and then a subcategory for a clothing catalogue. The plan is to then store that data in firestore but whenever i use map, I keep running into this error that tells me “Cannot read property ‘m…
how to get the list of elements matching attribute from HTMLDivElement?
This is an example source. With this.mainRef, how do I get the list of elements matching attribute of ‘role=option’? Something like.. I don’t want to go through the DOMs tree because the structure might get changed. I would like to “search” instead. THANKS! Answer Please try belo…
my react function hook not returning data state inside a function?
this is my function hook: then i use it in my react hook component like this: but what happens after signUp is resolved is that data is null? why is it that data is null? my log has data in it but just not on my component Answer Because the data you’re looking at (the one you’ve logged) is the
React hook useState with old state on children’s first render useEffect
Example: https://codesandbox.io/s/react-hooks-playground-forked-15ctx?file=/src/index.tsx One parent with one useState hook and 3 children with a useEffect hooks. I want the children to update the state in the parent via a callback so that all the components state are updated into one object in the parent. Th…
HERE map controls not loading in React
I’m trying to display zoom in and zoom out control in HERE maps in React. I’ve followed the steps mentioned in the documentation, but I’m not getting any help from there. I’ve followed everything in the link: https://developer.here.com/tutorials/react/ My map component link: https://gi…