Questions tagged [react-lifecycle]
313 questions
4
votes
0 answers
Screen mount twice when I navigate to other screen and quickly re navigate to same screen
I have a problem in navigation lifecycle, which when I navigate from screen to other the last one doesn't stay focus and quickly re navigate to the previous screen. Please if anyone can help me.
This is my AuthStack.tsx file :
import React, {…
Mohammed-Dev
- 41
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- 2
4
votes
2 answers
why componentDidUpdate run multiple times
I really don't understand the react life cycle. I run console.log in componentDidUpdate() and saw that it ran multiple times
Console showed that componentDidUpdate ran 3 times
Nguyen DN
- 140
- 1
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- 11
4
votes
1 answer
React child renders before parent
I am making a WeatherApp for freecodecamp. I have made a parent class for getting the geolocation and then pass the value of coordinates to Fetch.js, the problem is when i run the program the console shows that Fetch is likely being executed first,…
Fiction Free
- 55
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4
votes
3 answers
ShouldComponentUpdate is set to false child components do not update if props change
My goal is to render a child component without re-rendering it's parent component.
So for example, App's state is passed as a prop straight to the Column component but Column is a child of Table and Table has ShouldComponentUpdate set to false…
TheNickyYo
- 2,389
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3
votes
2 answers
Why did componentDidMount run after componentWillUnmount?
I am trying to grab the difference between componentDidMount and componentWillUnmount and tried the following code :
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
name: "",
};
}
…
React Learner
- 43
- 4
3
votes
2 answers
React functional component useEffect hook with dependency equal in class component lifecycles
I use the useEffect hook inside functional components with a dependency so that dependency changes , useEffect function will re-run like this :
const [show, setShow] = React.useState(false);
React.useEffect(() => {
console.log("Do…
Mehdi Faraji
- 2,574
- 8
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3
votes
0 answers
React: How to use componentDidUpdate for updating location.pathname?
I have a component which is leveraging history.push('/login') after one has registered for my app.
However I am getting this behavior where the url in the address bar is changing but I am not seeing the new component. So I read the docs regarding…
Antonio Pavicevac-Ortiz
- 7,239
- 17
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- 141
3
votes
2 answers
React Lifecycle Methods Synchronous or Asynchronous?
I am a new learner of React. Currently, I am learning Hooks. I was studying about useEffect hook. It is mostly compared with the lifecycle methods (componentDidMount, componentDidUpdate, and componentWillUnmount, etc.). My question is about the…
Muhammad Muaaz
- 164
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3
votes
0 answers
React-jss doesn't update even if the jss instance updated
So, an app should be rendered rtl or ltr depending on its state.
I have created a sandbox to demonstrate what should be done:
https://codesandbox.io/s/rr8lyw3op4?fontsize=14
You can see that the checked state property enables or disables RTL.…
Hasan upinion
- 117
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3
votes
1 answer
React: Function call after render() and before child's constructor()
I have a component called Parent, inside of which there is another component named Child:
So the lifecycle is as follows:
Parent constructor
Parent's render()
Child constructor
Child's render()
Child is…
maslick
- 2,903
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- 50
3
votes
1 answer
Correct way to fetch data with server side rendering (Next.js, when to use componentDidMount and when to use componentWillMount)
I am using Next.js, in the _app.js page (where we set a general webapp state) I have 2 types of data that I need to have in the header (so for every component).
1) The first type is the header info, this info should be rendered before the app…
Contentop
- 1,163
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3
votes
4 answers
componentDidMount is not working when redirect to a screen
I am having componentDidMount to list set of files(images) in a screen A, from this screen A I am having another screen B link where I can see detailed view of a file and there I have an option to delete a document.
When screen A is called using
…
Jothi Kannan
- 3,320
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3
votes
2 answers
ComponentDidUpdate and prevState
Here's the scenario. I have a parent component, with a child component.
Parent component does the ajax calls and pushes data down to the child.
When child component receives new data, within componentDidUpdate (of the child) i will re-set its…
joedotnot
- 4,810
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3
votes
3 answers
how to set react parent component state by a async function and then pass this state to child as props?
so i want to set the access by firebase function and then pass this access props to tabs component as props ,but tabs component is get the initial state null,firebase auth funtion is resolving after that .
class Admin extends React.Component {
…
yash
- 85
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3
votes
2 answers
How do I get user's location via navigator.geolocation before my fetch executes in componentDidMount() in react.js?
I have tried this a variety of different ways but am getting stumped. New to using promises and making api calls in react. This is what I have at the moment:
import React, { Component } from 'react'
import Column from './Column'
import { CardGroup }…
Alex Kramer
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