The goal – I want to set some local form state based on interaction with three checkboxes (see below). The rule – If two options are selected then the channel state should be set to ‘multi’ if one option is selected then the channel state should be the value of the checkbox that is sel…
Tag: reactjs
How to do muliple assign and add operations in reducer function in redux react.js?
I am working on a react app where I am using redux for state management,I am new to this and I have to do multiple state change operations inside a reducer function. Here’s my reducer function: What I want to do is,add a item to clientList which I am doing here and then re-assign 2 variables clientName …
Function variable value resetting after calling this.setState
I am relatively new to the JavaScript world, i am learning react and have encountered a weird issue see this code here i am concerned with the newPrice variable which is used update the state when more items are added, which works fine problem is after the this.setState return the newPrice gets retested to 0 …
React: How to set a component in ‘active’ state one at a time, and remove ‘active’ from all other component on click?
I want to set a particular component as active on click, and update the active component when some other component is clicked. Currently, both the components are remaining in active state. I want to remove active state from previously clicked component. Answer To make it general, let’s imagine that you …
Can’t npm install local dependency
I’ve been using npm install react-financial-charts successfully. However, I want to include this package locally instead (for reasons), so I checked out the master branch of react-financial-charts from Github. I now have two folders: Inside of my project, my package.json contains: npm run dev will now e…
Dynamic access of environment variables in NextJS not working
I cannot access environment variables dynamically in NextJS. In .env.local I have: In _app.tsx I have: I tried the same thing in Create React APP: Does anybody know why NextJS doesn’t allow this and how to override it? I’m aware next.config.js is a thing, but I’d like to use .env. Answer Acc…
What should be role value of div in html after apply onclick on div
What should be the value of the role attribute when I apply onclick to a div. I read the documentation WAI-ARIA Roles, but not able to find any specific role value of a div. I am working in React and this component is inside a loop, on this component I have to go to another page when clicking on this
How to replace Array in useState?
I want make program that table content is changed by user’s select. So I put empty array in useState, like this. And select html code: When I select option, data will be changed. But I don’t no how to do it with useState. These are data And my React code: I tried using map. But I don’t know …
Mongodb positional operator is not working
When I am trying to update just “title”, it is working fine, but if I am trying to update the nested object in the array, it is not working. Data: Data Working: Not working: Answer Demo – https://mongoplayground.net/p/caFBz-lx8dQ Use $[] The filtered positional operator $[] identifies the ar…
Objects are not valid as a React child (found: object with keys {..}). …..use an array instead. in Select (created by Context.Consumer)
This is what my data (clientsResponse) looks like: I have the following snippet of code: Causing the following error at browser : What am I doing wrong? Answer Replace your this.state.data.filter by- Also as the clientResponse is already an array so, do it like-