I’m trying to build a search bar using hooks but the props that I pass into my functional component gives me error and the output is never loaded. I pass the opt props from options.js to Filter.js. Here’s the code: Options.js Filter.js Answer In you Filter.js you are mapping directly the props.opt…
Tag: reactjs
How to update a state when a prop changes, without rendering twice
I have a data visualization component that has “width” as one of the props. A state keeps track of the zoom level in the chart, and it is updated when handling mouse events. The zoom needs to adjust when the width changes. Currently, I’m doing this inside a useEffect hook: But this makes the…
Why to use Object.assign() to update functional component props change?
I have a list of students and I display them on the table. There are two buttons that indicate by which value should I sort the list (name or birthdate). When the button is clicked and I sort the list, the list itself is getting sorted, but it’s not updating if I don’t assign the list to the new l…
function is declared but its value is never read : React
I am new to Reactjs so forgive me if this is lame. I am following the Reactjs docs for learning React and during the self implementation of exercise in components and props. And I encountered following weird behaviour: In the ‘Comment’ function <UserInfo ../> tag is working fine but <comm…
Call function in parent component without using props
I have a an App component that renders a CustomerForm component like so: App.js In my CustomerForm component, I have an onSubmit function that is called when the form submits: CustomerForm.js When I render the CustomerForm component from the App component, I realize that I could pass a reference to logout via…
TypeError: setEmail is not a function onChange
Trying to create sign in and sign up with react and firebase and got the error setEmail is not a function when trying to fill the input for the email, if i try to fill the input for password, i get the same error but for setPassword setPassword is not a function App.js and the code for LogIn.js I’ve tri…
How can I make my animate.css animation loop forever?
How can I make my animate.css animation last forever? I tried to use animationIterationCount = “infinite”. However, this doesn’t seem to have worked. This is the plugin I’m using. import { Flash } from ‘animate-css-styled-components’; Thank you! Answer you’d need to u…
Adding style guide to next.js (react) returns Error: ENOENT: no such file or directory,
I just started learning next.js and I wanted to add some documentation using https://react-styleguidist.js.org/ I created my project using npx create-next-app After installing it, and adding some configuration I’m getting the following error when trying to run it using the following command: npx stylegu…
React, setInterval behavior
Code Sample: https://codesandbox.io/s/romantic-wing-9yxw8?file=/src/App.tsx The code has two buttons – Start and Stop. Start calls a setInterval and saves interval id. Timer set to 1 second (1000 ms). Stop calls a clearInterval on the interval id. The interval id is declared outside the component. The i…
How to pass data in body in get type Api in react.js?
I am trying to pass data in body of get type Api in react.js app. I am using the following code. But Api doesn’t get any data. Answer Adding on what @Jayna commented, you can’t send a body with a get request. You may do it on Postman and generate the axios code for it, but it won’t work due