{"id":81735,"date":"2024-10-28T07:44:32","date_gmt":"2024-10-28T04:14:32","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/lifecycle-methods-and-hooks-in-react-aga\/"},"modified":"2024-10-28T07:44:32","modified_gmt":"2024-10-28T04:14:32","slug":"lifecycle-methods-and-hooks-in-react-aga","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/lifecycle-methods-and-hooks-in-react-aga\/","title":{"rendered":"React Js \u0642\u0633\u0645\u062a 5: \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a \u0648 \u0642\u0644\u0627\u0628\u200c\u0647\u0627 \u062f\u0631 React"},"content":{"rendered":"

Summarize this content to 400 words in Persian Lang React \u06cc\u06a9 \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0633\u062a \u06a9\u0647 \u0628\u0647 \u0645\u0627 \u0627\u06cc\u0646 \u0627\u0645\u06a9\u0627\u0646 \u0631\u0627 \u0645\u06cc \u062f\u0647\u062f \u062a\u0627 \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0627\u0639\u0644\u0627\u0645\u06cc \u0628\u0633\u0627\u0632\u06cc\u0645. \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u0641\u0627\u0647\u06cc\u0645 \u06a9\u0644\u06cc\u062f\u06cc \u062f\u0631 React \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u0647\u0627 \u0631\u0627 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0645\u06cc \u06a9\u0646\u06cc\u0645. \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0628\u0647 \u062f\u0648 \u062c\u0646\u0628\u0647 \u0627\u0635\u0644\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u067e\u0631\u062f\u0627\u062e\u062a: \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a \u062f\u0631 \u0627\u062c\u0632\u0627\u06cc \u06a9\u0644\u0627\u0633 \u0648 Hooks.<\/p>\n

1. \u0631\u0648\u0634 \u0647\u0627\u06cc \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a \u062f\u0631 \u0627\u062c\u0632\u0627\u06cc \u06a9\u0644\u0627\u0633<\/p>\n

\u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a\u060c \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u062e\u0627\u0635\u06cc \u0647\u0633\u062a\u0646\u062f \u06a9\u0647 \u062f\u0631 \u0645\u0631\u0627\u062d\u0644 \u0645\u062e\u062a\u0644\u0641 \u0686\u0631\u062e\u0647 \u0639\u0645\u0631 \u06cc\u06a9 \u0642\u0637\u0639\u0647 \u0646\u0627\u0645\u06cc\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0628\u0631\u062e\u06cc \u0627\u0632 \u0631\u0627\u06cc\u062c \u062a\u0631\u06cc\u0646 \u0631\u0648\u0634 \u0647\u0627\u06cc \u0686\u0631\u062e\u0647 \u0639\u0645\u0631 \u0648 \u0627\u0647\u062f\u0627\u0641 \u0622\u0646\u0647\u0627 \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a:<\/p>\n

\u0627\u0644\u0641 \u0646\u0635\u0628<\/p>\n

constructor(props): \u0631\u0648\u0634 \u0627\u0648\u0644 \u0628\u0647 \u0646\u0627\u0645. \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0628\u0631\u0627\u06cc \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0648 \u0631\u0648\u0634 \u0647\u0627\u06cc \u0627\u062a\u0635\u0627\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n

constructor(props) {
\n super(props);
\n this.state = { count: 0 };
\n}<\/p>\n

componentDidMount(): \u067e\u0633 \u0627\u0632 \u0627\u06cc\u0646\u06a9\u0647 \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u0628\u0631\u0627\u06cc \u0627\u0648\u0644\u06cc\u0646 \u0628\u0627\u0631 \u062f\u0631 DOM \u0646\u0635\u0628 \u0634\u062f \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0645\u06cc \u0634\u0648\u062f. \u0627\u06cc\u062f\u0647 \u0622\u0644 \u0628\u0631\u0627\u06cc \u0648\u0627\u06a9\u0634\u06cc \u062f\u0627\u062f\u0647 \u06cc\u0627 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0627\u0634\u062a\u0631\u0627\u06a9 \u0647\u0627.<\/p>\n

componentDidMount() {
\n this.fetchData();
\n}<\/p>\n

\u0628 \u0628\u0647 \u0631\u0648\u0632 \u0631\u0633\u0627\u0646\u06cc<\/p>\n

componentDidUpdate(prevProps, prevState): \u067e\u0633 \u0627\u0632 \u0628\u0647 \u0631\u0648\u0632 \u0631\u0633\u0627\u0646\u06cc \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0645\u06cc \u0634\u0648\u062f. \u0628\u0631\u0627\u06cc \u067e\u0627\u0633\u062e \u0628\u0647 \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u062f\u0631 props \u06cc\u0627 \u062d\u0627\u0644\u062a \u0645\u0641\u06cc\u062f \u0627\u0633\u062a. \u062d\u062a\u0645\u0627\u064b \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u062a\u0627 \u0627\u0632 \u062d\u0644\u0642\u0647 \u0647\u0627\u06cc \u0628\u06cc \u0646\u0647\u0627\u06cc\u062a \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u06a9\u0646\u06cc\u062f.<\/p>\n

componentDidUpdate(prevProps) {
\n if (this.props.id !== prevProps.id) {
\n this.fetchData();
\n }
\n}<\/p>\n

\u062c \u062f\u0631 \u062d\u0627\u0644 \u0646\u0635\u0628<\/p>\n

componentWillUnmount(): \u062f\u0631\u0633\u062a \u0642\u0628\u0644 \u0627\u0632 \u062d\u0630\u0641 \u0645\u0624\u0644\u0641\u0647 \u0627\u0632 DOM \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0645\u06cc \u0634\u0648\u062f. \u0628\u0631\u0627\u06cc \u062a\u0645\u06cc\u0632 \u06a9\u0631\u062f\u0646 \u0627\u0634\u062a\u0631\u0627\u06a9 \u0647\u0627\u060c \u062a\u0627\u06cc\u0645\u0631\u0647\u0627 \u06cc\u0627 \u0633\u0627\u06cc\u0631 \u0639\u0645\u0644\u06cc\u0627\u062a\u06cc \u06a9\u0647 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u067e\u0627\u06a9\u0633\u0627\u0632\u06cc \u062f\u0627\u0631\u0646\u062f \u0645\u0641\u06cc\u062f \u0627\u0633\u062a.<\/p>\n

componentWillUnmount() {
\n this.cleanup();
\n}<\/p>\n

\u062f \u0631\u0633\u06cc\u062f\u06af\u06cc \u0628\u0647 \u062e\u0637\u0627<\/p>\n

componentDidCatch(error, info): \u0628\u0631\u0627\u06cc \u06af\u0631\u0641\u062a\u0646 \u062e\u0637\u0627 \u062f\u0631 \u0627\u062c\u0632\u0627\u06cc \u0641\u0631\u0632\u0646\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f. \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0645\u062a\u0645\u0631\u06a9\u0632 \u062e\u0637\u0627 \u0645\u0641\u06cc\u062f \u0627\u0633\u062a.<\/p>\n

componentDidCatch(error, info) {
\n logErrorToMyService(error, info);
\n}<\/p>\n

2. \u0645\u0642\u062f\u0645\u0647 \u0627\u06cc \u0628\u0631 React Hooks<\/p>\n

React Hooks \u0642\u0627\u0628\u0644\u06cc\u062a\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0628\u0647 \u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u0627\u0632 \u0631\u0648\u0634 \u0647\u0627\u06cc \u062d\u0627\u0644\u062a \u0648 \u0686\u0631\u062e\u0647 \u0632\u0646\u062f\u06af\u06cc \u0628\u062f\u0648\u0646 \u0646\u0648\u0634\u062a\u0646 \u0627\u062c\u0632\u0627\u06cc \u06a9\u0644\u0627\u0633 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0628\u0631\u062e\u06cc \u0627\u0632 \u067e\u0631\u06a9\u0627\u0631\u0628\u0631\u062f\u062a\u0631\u06cc\u0646 \u0642\u0644\u0627\u0628 \u0647\u0627 \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a:<\/p>\n

\u0627\u0644\u0641 useState()<\/p>\n

\u0628\u0631\u0627\u06cc \u0627\u0641\u0632\u0648\u062f\u0646 \u062d\u0627\u0644\u062a \u0628\u0647 \u0627\u062c\u0632\u0627\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f. \u0627\u06cc\u0646 \u062a\u0627\u0628\u0639 \u06cc\u06a9 \u062c\u0641\u062a \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f: \u0648\u0636\u0639\u06cc\u062a \u0641\u0639\u0644\u06cc \u0648 \u062a\u0627\u0628\u0639\u06cc \u0628\u0631\u0627\u06cc \u0628\u0647 \u0631\u0648\u0632 \u0631\u0633\u0627\u0646\u06cc \u0622\u0646.<\/p>\n

import React, { useState } from ‘react’;<\/p>\n

const Counter = () => {
\n const [count, setCount] = useState(0);<\/p>\n

return (
\n <div>
\n <p>Count: {count}<\/p>
\n <button onClick={() => setCount(count + 1)}>Increment<\/button>
\n <\/div>
\n );
\n};<\/p>\n

\u0628 useEffect()<\/p>\n

useEffect \u0628\u0647 \u0645\u0627 \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc \u062f\u0647\u062f \u062a\u0627 \u0639\u0648\u0627\u0631\u0636 \u062c\u0627\u0646\u0628\u06cc \u0631\u0627 \u062f\u0631 \u0627\u062c\u0632\u0627\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u062c\u0631\u0627 \u06a9\u0646\u06cc\u0645. \u062a\u0631\u06a9\u06cc\u0628\u06cc \u0627\u0632 \u0639\u0645\u0644\u06a9\u0631\u062f\u0647\u0627\u06cc componentDidMount\u060c componentDidUpdate\u060c \u0648 componentWillUnmount.<\/p>\n

\u0645\u062b\u0627\u0644 1: useEffect \u0628\u0627 \u0622\u0631\u0627\u06cc\u0647 \u062e\u0627\u0644\u06cc ([]) \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 useEffect \u0628\u0627 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u062e\u0627\u0644\u06cc \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u06cc\u06a9 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f\u060c \u0627\u0641\u06a9\u062a \u062a\u0646\u0647\u0627 \u06cc\u06a9 \u0628\u0627\u0631 \u067e\u0633 \u0627\u0632 \u0645\u0627\u0646\u062a \u0634\u062f\u0646 \u0645\u0624\u0644\u0641\u0647 \u0627\u062c\u0631\u0627 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n

import React, { useState, useEffect } from ‘react’;<\/p>\n

const FetchDataOnce = () => {
\n const [data, setData] = useState([]);<\/p>\n

useEffect(() => {
\n const fetchData = async () => {
\n const response = await fetch(‘https:\/\/api.example.com\/data’);
\n const result = await response.json();
\n setData(result);
\n };<\/p>\n

fetchData();
\n }, []); \/\/ Effect runs only once when the component mounts<\/p>\n

return (
\n <ul>
\n {data.map(item => (
\n <li key={item.id}>{item.name}<\/li>
\n ))}
\n <\/ul>
\n );
\n};<\/p>\n

\u0645\u062b\u0627\u0644 2: useEffect \u0628\u062f\u0648\u0646 \u0622\u0631\u0627\u06cc\u0647 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0648\u0642\u062a\u06cc useEffect \u0628\u062f\u0648\u0646 \u0622\u0631\u0627\u06cc\u0647 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u0634\u0648\u062f\u060c \u0647\u0631 \u0628\u0627\u0631 \u06a9\u0647 \u0645\u0624\u0644\u0641\u0647 \u062f\u0648\u0628\u0627\u0631\u0647 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u0634\u0648\u062f\u060c \u0627\u0641\u06a9\u062a \u0627\u062c\u0631\u0627 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n

import React, { useState, useEffect } from ‘react’;<\/p>\n

const CountComponent = () => {
\n const [count, setCount] = useState(0);<\/p>\n

useEffect(() => {
\n console.log(`Count updated: ${count}`);<\/p>\n

const fetchData = async () => {
\n const response = await fetch(`https:\/\/api.example.com\/data\/${count}`);
\n const result = await response.json();
\n console.log(result);
\n };<\/p>\n

fetchData();
\n }); \/\/ Effect runs every time the component renders<\/p>\n

return (
\n <div>
\n <p>Count: {count}<\/p>
\n <button onClick={() => setCount(count + 1)}>Increment<\/button>
\n <\/div>
\n );
\n};<\/p>\n

\u0645\u062b\u0627\u0644 3: useEffect \u0628\u0627 \u0622\u0631\u0627\u06cc\u0647 \u0627\u06cc \u0627\u0632 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u0622\u0631\u0627\u06cc\u0647 \u0627\u06cc \u0627\u0632 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u0631\u0627 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u062f\u060c \u0647\u0631 \u0632\u0645\u0627\u0646 \u06a9\u0647 \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u0642\u0627\u062f\u06cc\u0631 \u0622\u0631\u0627\u06cc\u0647 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u062f\u060c \u0627\u0641\u06a9\u062a \u0627\u062c\u0631\u0627 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n

import React, { useState, useEffect } from ‘react’;<\/p>\n

const DependOnCount = () => {
\n const [count, setCount] = useState(0);
\n const [data, setData] = useState([]);<\/p>\n

useEffect(() => {
\n const fetchData = async () => {
\n const response = await fetch(`https:\/\/api.example.com\/data\/${count}`);
\n const result = await response.json();
\n setData(result);
\n };<\/p>\n

fetchData();
\n }, [count]); \/\/ Effect runs every time `count` changes<\/p>\n

return (
\n <div>
\n <p>Count: {count}<\/p>
\n <button onClick={() => setCount(count + 1)}>Increment<\/button>
\n <ul>
\n {data.map(item => (
\n <li key={item.id}>{item.name}<\/li>
\n ))}
\n <\/ul>
\n <\/div>
\n );
\n};<\/p>\n

\u062c useContext()<\/p>\n

UseContext Hook \u0628\u0631\u0627\u06cc \u062f\u0633\u062a\u0631\u0633\u06cc \u0628\u0647 \u0645\u062a\u0646 \u062f\u0631 \u0627\u062c\u0632\u0627\u06cc \u062a\u0627\u0628\u0639\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f. \u0627\u06cc\u0646 \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0628\u0631\u0627\u06cc \u0628\u0647 \u0627\u0634\u062a\u0631\u0627\u06a9 \u06af\u0630\u0627\u0631\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u062c\u0647\u0627\u0646\u06cc\u060c \u0645\u0627\u0646\u0646\u062f \u062a\u0645 \u0647\u0627 \u06cc\u0627 \u0648\u0636\u0639\u06cc\u062a \u0627\u062d\u0631\u0627\u0632 \u0647\u0648\u06cc\u062a \u06a9\u0627\u0631\u0628\u0631\u060c \u0628\u062f\u0648\u0646 \u062d\u0641\u0627\u0631\u06cc \u067e\u0627\u06cc\u0647 \u0645\u0641\u06cc\u062f \u0627\u0633\u062a.<\/p>\n

\u0645\u062b\u0627\u0644: \u0642\u0627\u0644\u0628 \u0628\u0646\u062f\u06cc \u0628\u0627 useContext
\n\u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c \u06cc\u06a9 \u0632\u0645\u06cc\u0646\u0647 \u062a\u0645 \u0633\u0627\u062f\u0647 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0628\u0647 \u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u0628\u06cc\u0646 \u062a\u0645 \u0647\u0627\u06cc \u0631\u0648\u0634\u0646 \u0648 \u062a\u0627\u0631\u06cc\u06a9 \u062c\u0627\u0628\u062c\u0627 \u0634\u0648\u06cc\u0645.<\/p>\n

1. \u0632\u0645\u06cc\u0646\u0647 \u062a\u0645 \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f<\/p>\n

\u0627\u0628\u062a\u062f\u0627 \u06cc\u06a9 \u0632\u0645\u06cc\u0646\u0647 \u0628\u0631\u0627\u06cc \u0645\u0648\u0636\u0648\u0639 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u06cc\u0645.<\/p>\n

import React, { createContext, useContext, useState } from ‘react’;<\/p>\n

\/\/ Create a Theme Context
\nconst ThemeContext = createContext();<\/p>\n

const ThemeProvider = ({ children }) => {
\n const [theme, setTheme] = useState(‘light’);<\/p>\n

const toggleTheme = () => {
\n setTheme((prevTheme) => (prevTheme === ‘light’ ? ‘dark’ : ‘light’));
\n };<\/p>\n

return (
\n <ThemeContext.Provider value={{ theme, toggleTheme }}>
\n {children}
\n <\/ThemeContext.Provider>
\n );
\n};<\/p>\n

2. \u0632\u0645\u06cc\u0646\u0647 \u062a\u0645 \u0631\u0627 \u0645\u0635\u0631\u0641 \u06a9\u0646\u06cc\u062f<\/p>\n

\u0633\u067e\u0633\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u0645 \u0645\u0624\u0644\u0641\u0647\u200c\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0632\u0645\u06cc\u0646\u0647 \u062a\u0645 \u0631\u0627 \u0628\u0631\u0627\u06cc \u0627\u0639\u0645\u0627\u0644 \u0633\u0628\u06a9\u200c\u0647\u0627 \u0645\u0635\u0631\u0641 \u0645\u06cc\u200c\u06a9\u0646\u062f \u0648 \u062f\u06a9\u0645\u0647\u200c\u0627\u06cc \u0628\u0631\u0627\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u0645\u0648\u0636\u0648\u0639 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc\u200c\u062f\u0647\u062f.<\/p>\n

const ThemedComponent = () => {
\n const { theme, toggleTheme } = useContext(ThemeContext);<\/p>\n

return (
\n <div className={`theme-${theme}`}>
\n <h1>{theme === ‘light’ ? ‘Light Theme’ : ‘Dark Theme’}<\/h1>
\n <button onClick={toggleTheme}>
\n Switch to {theme === ‘light’ ? ‘Dark’ : ‘Light’} Theme
\n <\/button>
\n <\/div>
\n );
\n};<\/p>\n

3. \u0628\u0631\u0646\u0627\u0645\u0647 \u0631\u0627 \u0628\u0627 Theme Provider \u0628\u067e\u06cc\u0686\u06cc\u062f<\/p>\n

\u062f\u0631 \u0646\u0647\u0627\u06cc\u062a\u060c \u0645\u0627 \u0628\u0631\u0646\u0627\u0645\u0647 \u062e\u0648\u062f (\u06cc\u0627 \u0628\u062e\u0634\u06cc \u0627\u0632 \u0622\u0646) \u0631\u0627 \u0628\u0627 ThemeProvider \u0645\u06cc \u0628\u0646\u062f\u06cc\u0645 \u062a\u0627 \u0632\u0645\u06cc\u0646\u0647 \u0645\u0648\u0636\u0648\u0639 \u0631\u0627 \u062f\u0631 \u0627\u062e\u062a\u06cc\u0627\u0631 \u0641\u0631\u0632\u0646\u062f\u0627\u0646\u0634 \u0642\u0631\u0627\u0631 \u062f\u0647\u06cc\u0645.<\/p>\n

const App = () => {
\n return (
\n <ThemeProvider>
\n <ThemedComponent \/>
\n {\/* Other components can also access the ThemeContext here *\/}
\n <\/ThemeProvider>
\n );
\n};<\/p>\n

export default App;<\/p>\n

\u062a\u0648\u0636\u06cc\u062d<\/p>\n

\u0627\u06cc\u062c\u0627\u062f \u0632\u0645\u06cc\u0646\u0647 \u062a\u0645: \u0645\u0627 \u06cc\u06a9 ThemeContext \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 createContext \u0648 \u06cc\u06a9 \u0645\u0624\u0644\u0641\u0647 ThemeProvider \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0648\u0636\u0639\u06cc\u062a \u062a\u0645 \u0641\u0639\u0644\u06cc \u0631\u0627 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0645\u06cc \u06a9\u0646\u062f \u0648 \u062a\u0627\u0628\u0639\u06cc \u0628\u0631\u0627\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u0622\u0646 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u062f\u0647\u062f.
\nContext Consumption: \u062f\u0631 ThemedComponent\u060c \u0645\u0627 \u0627\u0632 useContext(ThemeContext) \u0628\u0631\u0627\u06cc \u062f\u0633\u062a\u0631\u0633\u06cc \u0628\u0647 \u0645\u0648\u0636\u0648\u0639 \u0641\u0639\u0644\u06cc \u0648 \u062a\u0627\u0628\u0639 toggle \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645. \u0627\u06cc\u0646 \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u0645\u062d\u062a\u0648\u0627\u06cc \u0645\u062a\u0641\u0627\u0648\u062a\u06cc \u0631\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0645\u0648\u0636\u0648\u0639 \u0641\u0639\u0644\u06cc \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f \u0648 \u0634\u0627\u0645\u0644 \u062f\u06a9\u0645\u0647\u200c\u0627\u06cc \u0628\u0631\u0627\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0627\u062f\u0646 \u0622\u0646 \u0627\u0633\u062a.
\n\u0633\u0627\u062e\u062a\u0627\u0631 \u0628\u0631\u0646\u0627\u0645\u0647: \u06a9\u0644 \u0628\u0631\u0646\u0627\u0645\u0647 (\u06cc\u0627 \u0628\u062e\u0634\u06cc \u0627\u0632 \u0622\u0646) \u062f\u0631 ThemeProvider \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a \u0648 \u0628\u0647 \u0647\u0631 \u0645\u0624\u0644\u0641\u0647 \u0641\u0631\u0632\u0646\u062f \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc \u062f\u0647\u062f \u0628\u0647 \u0632\u0645\u06cc\u0646\u0647 \u0645\u0648\u0636\u0648\u0639 \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f.<\/p>\n

\u062f useMemo() \u0648 useCallback()<\/p>\n

useMemo(): \u0646\u062a\u06cc\u062c\u0647 \u0645\u062d\u0627\u0633\u0628\u0627\u062a \u06af\u0631\u0627\u0646 \u0642\u06cc\u0645\u062a \u0631\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u06a9\u0646\u062f \u062a\u0627 \u0627\u0632 \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u062c\u062f\u062f \u062f\u0631 \u0647\u0631 \u0631\u0646\u062f\u0631 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0634\u0648\u062f.<\/p>\n

const memoizedValue = useMemo(() => computeExpensiveValue(a, b), [a, b]);<\/p>\n

useCallback(): \u062a\u0648\u0627\u0628\u0639 \u0631\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f \u062a\u0627 \u0627\u0632 \u0627\u06cc\u062c\u0627\u062f \u0645\u062c\u062f\u062f \u0622\u0646\u200c\u0647\u0627 \u062f\u0631 \u0647\u0631 \u0631\u0646\u062f\u0631 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0634\u0648\u062f.<\/p>\n

const memoizedCallback = useCallback(() => {
\n doSomething(a, b);
\n}, [a, b]);<\/p>\n

3. \u0645\u0632\u0627\u06cc\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0642\u0644\u0627\u0628<\/p>\n

\u0642\u0644\u0627\u0628 \u0647\u0627 \u0627\u0646\u0639\u0637\u0627\u0641 \u067e\u0630\u06cc\u0631\u06cc \u0648 \u062a\u0648\u0627\u0646\u0627\u06cc\u06cc \u0628\u0647 \u0627\u0634\u062a\u0631\u0627\u06a9 \u06af\u0630\u0627\u0631\u06cc \u0645\u0646\u0637\u0642 \u0628\u06cc\u0646 \u0627\u062c\u0632\u0627 \u0631\u0627 \u0628\u062f\u0648\u0646 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0645\u0648\u0644\u0641\u0647 \u0647\u0627\u06cc \u0645\u0631\u062a\u0628\u0647 \u0628\u0627\u0644\u0627\u062a\u0631 (HOC) \u06cc\u0627 \u0631\u0646\u062f\u0631 \u067e\u0631\u0648\u067e \u0647\u0627 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc \u06a9\u0646\u0646\u062f. \u0628\u0631\u062e\u06cc \u0627\u0632 \u0645\u0632\u0627\u06cc\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0647\u0648\u06a9 \u0639\u0628\u0627\u0631\u062a\u0646\u062f \u0627\u0632:<\/p>\n

\u0633\u0627\u062f\u06af\u06cc \u0648 \u0648\u0636\u0648\u062d: \u06a9\u062f \u062a\u0645\u06cc\u0632\u062a\u0631 \u0648 \u062e\u0648\u0627\u0646\u062f\u0646 \u0622\u0633\u0627\u0646 \u062a\u0631 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n

\u0627\u0646\u0639\u0637\u0627\u0641 \u067e\u0630\u06cc\u0631\u06cc: \u0645\u0646\u0637\u0642 \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0647 \u062a\u0648\u0627\u0628\u0639 \u06a9\u0648\u0686\u06a9\u062a\u0631\u06cc \u062a\u0642\u0633\u06cc\u0645 \u06a9\u0631\u062f \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0622\u0646\u0647\u0627 \u0631\u0627 \u0645\u062c\u062f\u062f\u0627\u064b \u062f\u0631 \u0647\u0631 \u0645\u06a9\u0627\u0646\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f.<\/p>\n

\u06a9\u0627\u0647\u0634 \u067e\u06cc\u0686\u06cc\u062f\u06af\u06cc: \u0627\u0632 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u06a9\u0644\u0627\u0633 \u0647\u0627 \u0648 \u0631\u0648\u0634 \u0647\u0627\u06cc \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a \u0627\u062c\u062a\u0646\u0627\u0628 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n

\u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a \u0648 Hooks \u062f\u0648 \u062c\u0646\u0628\u0647 \u0645\u0647\u0645 \u062a\u0648\u0633\u0639\u0647 React \u0647\u0633\u062a\u0646\u062f. \u062f\u0631\u06a9 \u0646\u062d\u0648\u0647 \u06a9\u0627\u0631 \u0647\u0631 \u062f\u0648 \u0645\u0641\u0647\u0648\u0645 \u0628\u0647 \u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u062a\u0627 \u0627\u062c\u0632\u0627\u06cc \u06a9\u0627\u0631\u0622\u0645\u062f\u062a\u0631 \u0648 \u0642\u0627\u0628\u0644 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u0645. \u0642\u0644\u0627\u0628\u200c\u0647\u0627\u060c \u0628\u0647\u200c\u0648\u06cc\u0698\u0647\u060c \u0641\u0631\u0635\u062a\u200c\u0647\u0627\u06cc \u062c\u062f\u06cc\u062f\u06cc \u0631\u0627 \u0628\u0631\u0627\u06cc \u062a\u0648\u0633\u0639\u0647 \u0627\u062c\u0632\u0627\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0628\u0627\u0632 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f \u0648 \u0646\u062d\u0648\u0647 \u062a\u0639\u0627\u0645\u0644 \u0645\u0627 \u0628\u0627 \u0648\u0636\u0639\u06cc\u062a \u0648 \u0639\u0648\u0627\u0631\u0636 \u062c\u0627\u0646\u0628\u06cc \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc\u200c\u062f\u0647\u0646\u062f.<\/p>\n

\u0628\u0627 \u062a\u0633\u0644\u0637 \u0628\u0631 \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a \u0648 Hooks\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0647\u0627\u06cc React \u0642\u0648\u06cc\u200c\u062a\u0631 \u0648 \u067e\u0627\u0633\u062e\u200c\u06af\u0648 \u0628\u0633\u0627\u0632\u06cc\u062f. \u06a9\u062f \u0646\u0648\u06cc\u0633\u06cc \u0645\u0628\u0627\u0631\u06a9!<\/p>\n

React \u06cc\u06a9 \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0633\u062a \u06a9\u0647 \u0628\u0647 \u0645\u0627 \u0627\u06cc\u0646 \u0627\u0645\u06a9\u0627\u0646 \u0631\u0627 \u0645\u06cc \u062f\u0647\u062f \u062a\u0627 \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0627\u0639\u0644\u0627\u0645\u06cc \u0628\u0633\u0627\u0632\u06cc\u0645. \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u0641\u0627\u0647\u06cc\u0645 \u06a9\u0644\u06cc\u062f\u06cc \u062f\u0631 React \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u0647\u0627 \u0631\u0627 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0645\u06cc \u06a9\u0646\u06cc\u0645. \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0628\u0647 \u062f\u0648 \u062c\u0646\u0628\u0647 \u0627\u0635\u0644\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u067e\u0631\u062f\u0627\u062e\u062a: \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a \u062f\u0631 \u0627\u062c\u0632\u0627\u06cc \u06a9\u0644\u0627\u0633 \u0648 Hooks.<\/p>\n

\n
\n

\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/p>\nToggle<\/span><\/path><\/svg><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n