componentDidMount and componentWillUnmount in functional component react.

Ilham Fetchly answered on December 21, 2021 Popularity 8/10 Helpfulness 4/10

answer componentDidMount and componentWillUnmount in functional component react.

related react tutorial componentDidMount() componentWillUnmount()

componentDidMount and componentWillUnmount in functional component react.

Comment

import React, { useEffect } from 'react';
const ComponentExample => () => {
    useEffect(() => {
        // Anything in here is fired on component mount.
        return () => {
            // Anything in here is fired on component unmount.
        }
    }, [])
}

Popularity 8/10 Helpfulness 4/10 Language javascript

Source: robertmarshall.dev

Tags: javascript

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Contributed on Feb 17 2023

Ilham Fetchly

0 Answers Avg Quality 2/10

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react tutorial componentDidMount() componentWillUnmount()

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class Clock extends React.Component {
  constructor(props) {
    super(props);
    this.state = {date: new Date()};
  }

  componentDidMount() {
    this.timerID = setInterval(
      () => this.tick(),
      1000
    );
  }

  componentWillUnmount() {
    clearInterval(this.timerID);
  }

  tick() {
    this.setState({
      date: new Date()
    });
  }

  render() {
    return (
      <div>
        <h1>Hello, world!</h1>
        <h2>It is {this.state.date.toLocaleTimeString()}.</h2>
      </div>
    );
  }
}

ReactDOM.render(
  <Clock />,
  document.getElementById('root')
);

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: reactjs.org

Tags: javascript j

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Contributed on Dec 21 2021

Irfan

0 Answers Avg Quality 2/10

componentDidMount and componentWillUnmount in functional component react.

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react tutorial componentDidMount() componentWillUnmount()

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