Questions tagged [react-component-unmount]
40 questions
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0 answers
How to control react-router-dom Link navigation: it must reload component or it must bring back existing component?
I have 2 components/pages in my application: orderPage and customerPage, here is navigation in the main component:
import { Switch, Route} from 'react-router-dom';
TomR
- 2,696
- 6
- 34
- 87
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cancelToken: ourRequest.token IS NOT WORKING in React hook
I'm getting an Error While rendering between screens in my react-node.js project and I cannot get it off
This is my homescreen
const [q, setQuery] = useState("woman");
const [movies, setMovies] = useState(null);
const [error, setError] =…
Shuki
- 33
- 4
0
votes
1 answer
React changing body class before component is mounted
I have a login component which when mounted the body must be like below.
I am setting the class name using the useEffect hook like below:
useEffect(
() => {
document.body.className = "login-page";
},
…
Edgias
- 77
- 3
- 10
0
votes
1 answer
Explain: Normally, variables “disappear” when the function exits but state variables are preserved by React
Normally, variables “disappear” when the function exits but state variables are preserved by React
1- Does this mean that the state is preserved when the component unmounts ?
2- If yes, does this means that when this component is ready to be…
EEAH
- 715
- 4
- 17
0
votes
1 answer
condition componentWillUnmount() in reactjs
When clicking on button, quote should unmount using componentwillunmount() but I checked by logging to console, unmount not at all running.
import React from "react";
import "./App.css";
class App extends React.Component {
constructor() {
…
Shekar
- 165
- 1
- 5
0
votes
0 answers
React.js - Updating icon styles on component mount/unmount
I have an app that I'm building where it has a navigation bar down the left hand side with icons that open a modal when clicked on:
I have successfully set this up so that a different modal is loaded whenever the user clicks on one of the icons in…
Sean
- 494
- 6
- 23
0
votes
2 answers
Using a single component multiple times in a single parent class in react.js
class Counter extends Component {
constructor(props) {
super(props);
this.state = {
age: 10,
};
}
handleincrement = () => {
console.log("hy");
this.setState((prevState) => {
return { age: prevState.age + 1 };
…
Fazal Ur Rehman Fazal
- 119
- 1
- 8
0
votes
2 answers
When clearInterval will be called - When the timer changes or When the render is unmounted with which the setInterval is associated
I'm a beginner in React and stuck with some problem.
When the setInterval associated with a particular renders gets cleared?
import React, { useState, useEffect, useRef } from "react";
import ReactDOM from "react-dom";
function Counter() {
…
Abhijeet
- 588
- 1
- 4
- 18
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votes
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Unmounting a component when triggered through parent component
I have a parent component and child component. Child component will be rendered through parent based on a condition. So, when child gets rendered, all useEffect and other code gets executed and I'm able to achieve componentDidMount kind of methods.…
KVK
- 47
- 2
- 9
-1
votes
2 answers
React Hooks: Can't change anything from parent in useEffect() return
I have a component children with a form in which the user can put a tittle, description and images.
This component is on a section of it's parent component, and I wan't that if the user changes of section (by error or only looking) it's form data is…
Marcelo Potty
- 315
- 1
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- 10