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react useEffect

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DonsWayo answered on May 29, 2020 Popularity 10/10 Helpfulness 4/10

answer react useEffect

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react useEffect

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import React, { useEffect } from 'react';

export const App: React.FC = () => {
  
  useEffect(() => {
        
  }, [/*Here can enter some value to call again the content inside useEffect*/])
  
  return (
    <div>Use Effect!</div>
  );
}

Popularity 10/10 Helpfulness 4/10 Language typescript

Source: Grepper

Tags: typescript use-effect

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Contributed on May 29 2020

DonsWayo

0 Answers Avg Quality 2/10

Closely Related Answers

useeffect

Comment

import React, { useState, useEffect } from 'react';
function Example() {
  const [count, setCount] = useState(0);

  useEffect(() => {    document.title = `You clicked ${count} times`;  });
  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );
}

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: reactjs.org

Tags: javascript j

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Contributed on Sep 27 2020

Muddy Mamba

0 Answers Avg Quality 2/10

useEffect : react

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import { useState, useEffect } from 'react';

function App() {

  const [pieceOfState, setPieceOfState] = useState(0);

  useEffect(() => {
    console.log('I\'m in useEffect!');
    console.log('This will be called whenever an instance of this component mounts');
    console.log('or whenever pieceOfState is updated');
  }, [pieceOfState]);

  return (
    <div>
      <button onClick={() => setPieceOfState(pieceOfState + 1)}>Click Me to Update pieceOfState!</button>
    </div>
  );
}

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: learn-2.galvanize.com

Tags: javascript j

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Contributed on Jun 25 2022

Jae Clayton

0 Answers Avg Quality 2/10

useeffect

Comment

import React, { useState, useEffect } from 'react';

function Example() {
  const [count, setCount] = useState(0);

  // Similar to componentDidMount and componentDidUpdate:
  useEffect(() => {
    // Update the document title using the browser API
    document.title = `You clicked ${count} times`;
  });

  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on May 18 2022

Said HR

0 Answers Avg Quality 2/10

useeffect react

Comment

import React, { useState, useEffect } from 'react'

export default function App() {
  const [count, setCount] = useState(0)
  const color = count % 5 === 0 ? 'red' : 'blue'

  useEffect(() => {
    document.body.style.backgroundColor = color
  }, [color])

  return (
    <button
      onClick={() => {
        setCount(count + 1)
      }}
    >
      Click HERE to increment: {count}
    </button>
  )
}

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: www.react.express

Tags: hook

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Contributed on Nov 08 2022

Mehedi Islam Ripon

0 Answers Avg Quality 2/10

useEffect

Comment

useEffect(()=>{
  // It will run everytime  
})

// onMount 
useEffect(()=>{
  // It will run only one time  
},[]) 

// component didUpdate
useEffect(()=>{
  // it will run when dependency array change   
},[data])

// component willUnmount
useEffect(()=>{
  // for cleaning up the code
  return(()=>{
  })
})

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Mar 05 2022

Abhishek

0 Answers Avg Quality 2/10

React useEffect Hook

Comment

import React, { useState, useEffect } from "react";

const App = () => {
  const [color, setColor] = useState("black");

  useEffect(() => {
    const changeColorOnClick = () => {
      if (color === "black") {
        setColor("red");
      } else {
        setColor("black");
      }
    };
    
    document.addEventListener("click", changeColorOnClick);

    return () => {
      document.removeEventListener("click", changeColorOnClick);
    };
  }, [color]);

  return (
    <div>
      <div
        id="myDiv"
        style={{
          color: "white",
          width: "100px",
          height: "100px",
          position: "absolute",
          left: "50%",
          top: "50%",
          backgroundColor: color,
        }}
      >
        This div can change color. Click on me!
      </div>
    </div>
  );
};

export default App;

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: www.theodinproject.com

Tags: hook

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Contributed on Apr 18 2022

Andrea Maiolo

0 Answers Avg Quality 2/10

useeffect react

Comment

import React, { useState, useEffect } from 'react';
function Example() {
  const [count, setCount] = useState(0);

  // Similar to componentDidMount and componentDidUpdate:  
  useEffect(() => {    
  	// Update the document title using the browser API    
  	document.title = `You clicked ${count} times`;  
  });
  
  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );
}
Source:reactjs.org
3
React useEffect, useState

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Jan 30 2022

Tough Tuatara

0 Answers Avg Quality 2/10

useEffect

Comment

  useEffect(() => {
  	/*Inside*/
  });

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Mar 29 2022

Neka

0 Answers Avg Quality 2/10

useeffect react

Comment

import { useEffect } from 'react';
import { createConnection } from './chat.js';

function ChatRoom({ roomId }) {
  const [serverUrl, setServerUrl] = useState('https://localhost:1234');

  useEffect(() => {
    const connection = createConnection(serverUrl, roomId);
    connection.connect();
    return () => {
      connection.disconnect();
    };
  }, [serverUrl, roomId]);
  // ...
}

Popularity 7/10 Helpfulness 3/10 Language javascript

Source: react.dev

Tags: javascript use-effect u

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Contributed on Feb 01 2024

Imran Khan

0 Answers Avg Quality 2/10

react useEffect

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