{"id":83044,"date":"2024-11-08T23:46:03","date_gmt":"2024-11-08T20:16:03","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/usereducer-react-hooks-c39\/"},"modified":"2024-11-08T23:46:03","modified_gmt":"2024-11-08T20:16:03","slug":"usereducer-react-hooks-c39","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/usereducer-react-hooks-c39\/","title":{"rendered":"useReducer: React Hooks – DEV Community"},"content":{"rendered":"

Summarize this content to 400 words in Persian Lang <\/p>\n

useReducer \u062f\u0631 React: Simplify State Management \u0628\u0627 \u062f\u0648 \u067e\u0631\u0648\u0698\u0647 \u06a9\u0648\u0686\u06a9<\/p>\n

\u0645\u0642\u062f\u0645\u0647<\/p>\n

\u0645\u062f\u06cc\u0631\u06cc\u062a \u062d\u0627\u0644\u062a \u0628\u062e\u0634 \u0645\u0647\u0645\u06cc \u0627\u0632 \u0633\u0627\u062e\u062a \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u062f\u06cc \u067e\u0648\u06cc\u0627 \u0648 \u062a\u0639\u0627\u0645\u0644\u06cc \u062f\u0631 React \u0627\u0633\u062a. \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 useState \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u062d\u0627\u0644\u062a \u0633\u0627\u062f\u0647 \u06a9\u0627\u0641\u06cc \u0627\u0633\u062a\u060c \u0632\u06cc\u0631\u0627 \u0648\u0636\u0639\u06cc\u062a \u0628\u0631\u0646\u0627\u0645\u0647 \u0634\u0645\u0627 \u062f\u0631 \u067e\u06cc\u0686\u06cc\u062f\u06af\u06cc \u0627\u0641\u0632\u0627\u06cc\u0634 \u0645\u06cc \u06cc\u0627\u0628\u062f\u060c useReducer \u0631\u0648\u0634\u06cc \u0642\u062f\u0631\u062a\u0645\u0646\u062f\u062a\u0631 \u0648 \u0642\u0627\u0628\u0644 \u067e\u06cc\u0634 \u0628\u06cc\u0646\u06cc \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0622\u0646 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u062f\u0647\u062f. \u0628\u0627 \u0627\u0644\u0647\u0627\u0645 \u0627\u0632 \u0627\u0644\u06af\u0648\u06cc \u06a9\u0627\u0647\u0646\u062f\u0647 Redux\u060c useReducer \u0628\u0647 \u0634\u0645\u0627 \u0627\u06cc\u0646 \u0627\u0645\u06a9\u0627\u0646 \u0631\u0627 \u0645\u06cc\u200c\u062f\u0647\u062f \u062a\u0627 \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u0627\u0646\u062a\u0642\u0627\u0644 \u062d\u0627\u0644\u062a \u0628\u0627\u06cc\u062f \u062f\u0631 \u067e\u0627\u0633\u062e \u0628\u0647 \u0627\u0642\u062f\u0627\u0645\u0627\u062a \u062e\u0627\u0635 \u0627\u062a\u0641\u0627\u0642 \u0628\u06cc\u0641\u062a\u062f\u060c \u0648 \u0622\u0646 \u0631\u0627 \u0628\u0631\u0627\u06cc \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627\u06cc\u06cc \u0628\u0627 \u0628\u0647\u200c\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc\u200c\u0647\u0627\u06cc \u0686\u0646\u062f\u06af\u0627\u0646\u0647 \u0648 \u067e\u06cc\u0686\u06cc\u062f\u0647 \u062d\u0627\u0644\u062a \u0627\u06cc\u062f\u0647\u200c\u0622\u0644 \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n

\u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647\u060c \u0645\u0627:<\/p>\n

\u0627\u0632 \u0637\u0631\u06cc\u0642 \u062a\u0648\u0636\u06cc\u062d \u0648\u0627\u0636\u062d\u06cc \u0627\u0632 useReducer\u060c \u0646\u062d\u0648 \u0622\u0646 \u0648 \u0632\u0645\u0627\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0646.
\n\u0627\u062c\u0631\u0627\u06cc \u062f\u0648 \u067e\u0631\u0648\u0698\u0647 \u06a9\u0648\u0686\u06a9:<\/p>\n

\u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u0628\u0627 \u0627\u0642\u062f\u0627\u0645\u0627\u062a \u0645\u062a\u0639\u062f\u062f: \u0645\u062b\u0627\u0644\u06cc \u06a9\u0647 \u0641\u0631\u0627\u062a\u0631 \u0627\u0632 \u0627\u0641\u0632\u0627\u06cc\u0634\/\u06a9\u0627\u0647\u0634 \u0627\u0633\u0627\u0633\u06cc \u0627\u0633\u062a \u0648 \u0646\u0634\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 useReducer \u0686\u0646\u062f\u06cc\u0646 \u0646\u0648\u0639 \u0639\u0645\u0644 \u0631\u0627 \u06a9\u0646\u062a\u0631\u0644 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n

\u0641\u0647\u0631\u0633\u062a \u06a9\u0627\u0631\u0647\u0627 \u0628\u0627 \u0627\u0646\u062a\u0642\u0627\u0644 \u0648\u0636\u0639\u06cc\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647: \u06cc\u06a9 \u0628\u0631\u0646\u0627\u0645\u0647 \u06a9\u0627\u0631\u06cc \u06a9\u0647 \u0628\u0631\u062c\u0633\u062a\u0647 \u0645\u06cc \u06a9\u0646\u062f useReducer\u062a\u0648\u0627\u0646\u0627\u06cc\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0627\u0634\u06cc\u0627\u0621 \u062d\u0627\u0644\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647<\/p>\n

\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0647 \u0686\u06af\u0648\u0646\u06af\u06cc \u0622\u0646 \u0628\u067e\u0631\u062f\u0627\u0632\u06cc\u0645 useReducer \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u062f\u06cc\u0631\u06cc\u062a \u062d\u0627\u0644\u062a \u0634\u0645\u0627 \u0631\u0627 \u062f\u0631 React \u0633\u0627\u062f\u0647 \u06a9\u0646\u062f!<\/p>\n

\u062f\u0631\u06a9 \u06a9\u0631\u062f\u0646 useReducer<\/p>\n

\u0686\u06cc\u0633\u062a useReducer?<\/p>\n

useReducer \u06cc\u06a9 \u0642\u0644\u0627\u0628 React \u0627\u0633\u062a \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0645\u0648\u0642\u0639\u06cc\u062a \u0647\u0627\u06cc\u06cc \u0637\u0631\u0627\u062d\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a \u06a9\u0647 \u062f\u0631 \u0622\u0646 useState \u06a9\u0648\u062a\u0627\u0647 \u0645\u06cc \u0622\u06cc\u062f \u0628\u0647 \u062c\u0627\u06cc \u0628\u0647 \u0631\u0648\u0632 \u0631\u0633\u0627\u0646\u06cc \u0645\u0633\u062a\u0642\u06cc\u0645 \u062d\u0627\u0644\u062a\u060c \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u06a9\u0627\u0647\u0646\u062f\u0647 \u0631\u0627 \u0645\u0634\u062e\u0635 \u0645\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0648\u0636\u0639\u06cc\u062a \u0628\u0639\u062f\u06cc \u0631\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0648\u0636\u0639\u06cc\u062a \u0641\u0639\u0644\u06cc \u0648 \u06cc\u06a9 \u0639\u0645\u0644 \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u06cc \u06a9\u0646\u062f. \u0627\u06cc\u0646 \u0631\u0648\u06cc\u06a9\u0631\u062f \u0627\u0639\u0644\u0627\u0645\u06cc\u060c \u0627\u0646\u062a\u0642\u0627\u0644 \u062d\u0627\u0644\u062a \u0631\u0627 \u0642\u0627\u0628\u0644 \u067e\u06cc\u0634\u200c\u0628\u06cc\u0646\u06cc \u0646\u06af\u0647 \u0645\u06cc\u200c\u062f\u0627\u0631\u062f \u0648 \u0628\u0647 \u0634\u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc\u200c\u062f\u0647\u062f \u0645\u0646\u0637\u0642 \u067e\u06cc\u0686\u06cc\u062f\u0647\u200c\u062a\u0631 \u062d\u0627\u0644\u062a \u0631\u0627 \u0628\u0647 \u0631\u0648\u0634\u06cc \u0645\u062a\u0645\u0631\u06a9\u0632 \u0645\u062f\u06cc\u0631\u06cc\u062a \u06a9\u0646\u06cc\u062f.<\/p>\n

\u0646\u062d\u0648 \u0627\u0632 useReducer<\/p>\n

\u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u062a\u0641\u06a9\u06cc\u06a9 \u0627\u0632 \u0646\u062d\u0648 \u0627\u0633\u062a:<\/p>\n

const [state, dispatch] = useReducer(reducer, initialState);<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

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

state: \u0648\u0636\u0639\u06cc\u062a \u0641\u0639\u0644\u06cc<\/p>\n

action: \u06cc\u06a9 \u0634\u06cc \u0628\u0627 \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u0639\u0645\u0644\u060c \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0634\u0627\u0645\u0644 a type \u0648 \u0627\u062e\u062a\u06cc\u0627\u0631\u06cc payload.<\/p>\n

initialState: \u0645\u0642\u062f\u0627\u0631 \u0634\u0631\u0648\u0639 \u0628\u0631\u0627\u06cc \u0627\u06cc\u0627\u0644\u062a.<\/p>\n

\u0645\u062b\u0627\u0644: \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u0627\u0648\u0644\u06cc\u0647 \u0628\u0627 useReducer<\/p>\n

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

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

function reducer(state, action) {
\n switch (action.type) {
\n case ‘increment’:
\n return { count: state.count + 1 };
\n case ‘decrement’:
\n return { count: state.count – 1 };
\n default:
\n return state;
\n }
\n}<\/p>\n

function Counter() {
\n const [state, dispatch] = useReducer(reducer, { count: 0 });<\/p>\n

return (
\n <div>
\n <p>Count: {state.count}<\/p>
\n <button onClick={() => dispatch({ type: ‘increment’ })}>Increment<\/button>
\n <button onClick={() => dispatch({ type: ‘decrement’ })}>Decrement<\/button>
\n <\/div>
\n );
\n}<\/p>\n

export default Counter;<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u062a\u0648\u0636\u06cc\u062d \u0622\u06cc\u06cc\u0646 \u0646\u0627\u0645\u0647<\/p>\n

\u0639\u0645\u0644\u06a9\u0631\u062f \u06a9\u0627\u0647\u0646\u062f\u0647: \u0627\u06cc\u0646 \u062a\u0627\u0628\u0639 \u0646\u062d\u0648\u0647 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0627\u0642\u062f\u0627\u0645\u0627\u062a \u0631\u0627 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc \u06a9\u0646\u062f. \u0628\u0631 \u0627\u0633\u0627\u0633 \u0646\u0648\u0639 \u0639\u0645\u0644 (increment \u06cc\u0627 decrement)\u060c \u062a\u0627\u0628\u0639 \u06a9\u0627\u0647\u0646\u062f\u0647 \u06cc\u06a9 \u0634\u06cc \u062d\u0627\u0644\u062a \u062c\u062f\u06cc\u062f \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f.<\/p>\n

\u0639\u0645\u0644\u06cc\u0627\u062a \u0627\u0639\u0632\u0627\u0645: dispatch \u0639\u0645\u0644\u06cc \u0631\u0627 \u0628\u0647 \u06a9\u0627\u0647\u0646\u062f\u0647 \u0627\u0631\u0633\u0627\u0644 \u0645\u06cc \u06a9\u0646\u062f\u060c \u06a9\u0647 \u0622\u0646 \u0631\u0627 \u067e\u0631\u062f\u0627\u0632\u0634 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u0648\u0636\u0639\u06cc\u062a \u0631\u0627 \u0628\u0631 \u0627\u06cc\u0646 \u0627\u0633\u0627\u0633 \u0628\u0647 \u0631\u0648\u0632 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n

\u0632\u0645\u0627\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 useReducer<\/p>\n

useReducer \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0632\u0645\u0627\u0646\u06cc \u0645\u0641\u06cc\u062f \u0627\u0633\u062a \u06a9\u0647:<\/p>\n

\u0645\u0646\u0637\u0642 \u062d\u0627\u0644\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0627\u0633\u062a \u06cc\u0627 \u0634\u0627\u0645\u0644 \u0686\u0646\u062f\u06cc\u0646 \u0627\u0631\u0632\u0634 \u0641\u0631\u0639\u06cc \u0627\u0633\u062a.
\n\u062d\u0627\u0644\u062a \u0628\u0639\u062f\u06cc \u0628\u0647 \u062d\u0627\u0644\u062a \u0642\u0628\u0644\u06cc \u0628\u0633\u062a\u06af\u06cc \u062f\u0627\u0631\u062f.
\n\u0686\u0646\u062f\u06cc\u0646 \u0645\u0624\u0644\u0641\u0647 \u0628\u0627\u06cc\u062f \u0628\u0647 \u062d\u0627\u0644\u062a \u0645\u062f\u06cc\u0631\u06cc\u062a \u0634\u062f\u0647 \u062a\u0648\u0633\u0637 \u06a9\u0627\u0647\u0646\u062f\u0647 \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u0646\u062f (\u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u062a\u0631\u06a9\u06cc\u0628 \u06a9\u0646\u06cc\u062f useReducer \u0628\u0627 useContext \u0628\u0631\u0627\u06cc \u062f\u0648\u0644\u062a \u062c\u0647\u0627\u0646\u06cc).<\/p>\n

Mini Project 1: Counter with Multiple Actions<\/p>\n

\u062f\u0631 \u0627\u06cc\u0646 \u067e\u0631\u0648\u0698\u0647\u060c \u0645\u0627 \u06cc\u06a9 \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u067e\u06cc\u0634\u0631\u0641\u062a\u0647 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0628\u0647 \u0686\u0646\u062f\u06cc\u0646 \u0639\u0645\u0644\u06cc\u0627\u062a (\u0627\u0641\u0632\u0627\u06cc\u0634\u060c \u06a9\u0627\u0647\u0634\u060c \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f) \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc \u062f\u0647\u062f \u062a\u0627 \u0628\u0628\u06cc\u0646\u06cc\u0645 \u0686\u06af\u0648\u0646\u0647 useReducer \u0645\u062c\u0645\u0648\u0639\u0647 \u0648\u0633\u06cc\u0639 \u062a\u0631\u06cc \u0627\u0632 \u0627\u0642\u062f\u0627\u0645\u0627\u062a \u0631\u0627 \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc \u062f\u0647\u062f.<\/p>\n

\u0645\u0631\u062d\u0644\u0647 1: \u062a\u0627\u0628\u0639 Reducer \u0631\u0627 \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0646\u06cc\u062f<\/p>\n

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

function reducer(state, action) {
\n switch (action.type) {
\n case ‘increment’:
\n return { count: state.count + 1 };
\n case ‘decrement’:
\n return { count: state.count – 1 };
\n case ‘reset’:
\n return { count: 0 };
\n default:
\n throw new Error(`Unknown action: ${action.type}`);
\n }
\n}<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0645\u0631\u062d\u0644\u0647 2: \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a Counter \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f<\/p>\n

function EnhancedCounter() {
\n const [state, dispatch] = useReducer(reducer, { count: 0 });<\/p>\n

return (
\n <div>
\n <p>Count: {state.count}<\/p>
\n <button onClick={() => dispatch({ type: ‘increment’ })}>Increment<\/button>
\n <button onClick={() => dispatch({ type: ‘decrement’ })}>Decrement<\/button>
\n <button onClick={() => dispatch({ type: ‘reset’ })}>Reset<\/button>
\n <\/div>
\n );
\n}<\/p>\n

export default EnhancedCounter;<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u06cc\u0646 \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u067e\u06cc\u0634\u0631\u0641\u062a\u0647 \u0627\u06a9\u0646\u0648\u0646 \u0639\u0644\u0627\u0648\u0647 \u0628\u0631 \u0627\u0641\u0632\u0627\u06cc\u0634 \u0648 \u06a9\u0627\u0647\u0634\u060c \u0627\u0632 \u0639\u0645\u0644\u06a9\u0631\u062f \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f \u067e\u0634\u062a\u06cc\u0628\u0627\u0646\u06cc \u0645\u06cc \u06a9\u0646\u062f. \u0627\u06cc\u0646 \u067e\u0631\u0648\u0698\u0647 \u0646\u0634\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f useReducer\u0627\u0646\u0639\u0637\u0627\u0641 \u067e\u0630\u06cc\u0631\u06cc \u062f\u0631 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0627\u0642\u062f\u0627\u0645\u0627\u062a \u0628\u0631\u0627\u06cc \u0628\u0647 \u0631\u0648\u0632 \u0631\u0633\u0627\u0646\u06cc \u0627\u06cc\u0627\u0644\u062a.<\/p>\n

\u0645\u06cc\u0646\u06cc \u067e\u0631\u0648\u0698\u0647 2: \u0627\u06cc\u062c\u0627\u062f \u0644\u06cc\u0633\u062a \u06a9\u0627\u0631\u0647\u0627\u06cc\u06cc \u0628\u0627 \u0627\u0646\u062a\u0642\u0627\u0644 \u0648\u0636\u0639\u06cc\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647<\/p>\n

\u0628\u0631\u0646\u0627\u0645\u0647 \u0641\u0647\u0631\u0633\u062a \u06a9\u0627\u0631\u0647\u0627 \u0646\u062d\u0648\u0647 \u0627\u0646\u062c\u0627\u0645 \u0622\u0646 \u0631\u0627 \u0628\u0631\u062c\u0633\u062a\u0647 \u0645\u06cc \u06a9\u0646\u062f useReducer \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0627\u0634\u06cc\u0627\u0621 \u062d\u0627\u0644\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0628\u0627 \u0686\u0646\u062f\u06cc\u0646 \u0627\u0646\u062a\u0642\u0627\u0644\u060c \u0645\u0627\u0646\u0646\u062f \u0627\u0641\u0632\u0648\u062f\u0646\u060c \u062d\u0630\u0641 \u0648 \u062c\u0627\u0628\u062c\u0627\u06cc\u06cc \u0648\u0638\u0627\u06cc\u0641 \u0627\u06cc\u062f\u0647 \u0622\u0644 \u0627\u0633\u062a.<\/p>\n

\u0645\u0631\u062d\u0644\u0647 1: Reducer \u0631\u0627 \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0646\u06cc\u062f<\/p>\n

function todoReducer(state, action) {
\n switch (action.type) {
\n case ‘add’:
\n return […state, { id: Date.now(), text: action.payload, completed: false }];
\n case ‘remove’:
\n return state.filter(todo => todo.id !== action.payload);
\n case ‘toggle’:
\n return state.map(todo =>
\n todo.id === action.payload ? { …todo, completed: !todo.completed } : todo
\n );
\n default:
\n throw new Error(`Unknown action type: ${action.type}`);
\n }
\n}<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0645\u0631\u062d\u0644\u0647 2: \u0645\u0624\u0644\u0641\u0647 \u0641\u0647\u0631\u0633\u062a \u06a9\u0627\u0631\u0647\u0627 \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f<\/p>\n

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

function ToDoList() {
\n const [todos, dispatch] = useReducer(todoReducer, []);
\n const [task, setTask] = useState(”);<\/p>\n

const handleAdd = () => {
\n if (task.trim()) {
\n dispatch({ type: ‘add’, payload: task });
\n setTask(”); \/\/ Clear input field
\n }
\n };<\/p>\n

return (
\n <div>
\n <h2>To-Do List<\/h2>
\n <input
\n value={task}
\n onChange={e => setTask(e.target.value)}
\n placeholder=”Enter a new task”
\n \/>
\n <button onClick={handleAdd}>Add Task<\/button><\/p>\n

<ul>
\n {todos.map(todo => (
\n <li key={todo.id} style={{ textDecoration: todo.completed ? ‘line-through’ : ‘none’ }}>
\n {todo.text}
\n <button onClick={() => dispatch({ type: ‘toggle’, payload: todo.id })}>
\n {todo.completed ? ‘Undo’ : ‘Complete’}
\n <\/button>
\n <button onClick={() => dispatch({ type: ‘remove’, payload: todo.id })}>Delete<\/button>
\n <\/li>
\n ))}
\n <\/ul>
\n <\/div>
\n );
\n}<\/p>\n

export default ToDoList;<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u062a\u0648\u0636\u06cc\u062d \u06a9\u062f \u0644\u06cc\u0633\u062a \u06a9\u0627\u0631\u0647\u0627<\/p>\n

\u0627\u0642\u062f\u0627\u0645\u0627\u062a:<\/p>\n

\u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u062f: \u06cc\u06a9 \u06a9\u0627\u0631 \u062c\u062f\u06cc\u062f \u0628\u0627 \u06cc\u06a9 \u0634\u0646\u0627\u0633\u0647 \u0645\u0646\u062d\u0635\u0631 \u0628\u0647 \u0641\u0631\u062f \u0628\u0647 \u0644\u06cc\u0633\u062a \u0627\u0636\u0627\u0641\u0647 \u0645\u06cc \u06a9\u0646\u062f \u0648 completed \u0648\u0636\u0639\u06cc\u062a \u0631\u0648\u06cc false.<\/p>\n

\u062d\u0630\u0641 \u06a9\u0646\u06cc\u062f: \u06cc\u06a9 \u06a9\u0627\u0631 \u0631\u0627 \u0628\u0627 \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0622\u0646 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0634\u0646\u0627\u0633\u0647 \u062d\u0630\u0641 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n

\u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u062f\u0647\u06cc\u062f: \u06cc\u06a9 \u06a9\u0627\u0631 \u0631\u0627 \u0628\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0627\u062f\u0646 \u0639\u0644\u0627\u0645\u062a \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u06a9\u0627\u0645\u0644 \u06cc\u0627 \u0646\u0627\u062a\u0645\u0627\u0645 \u0639\u0644\u0627\u0645\u062a \u06af\u0630\u0627\u0631\u06cc \u0645\u06cc \u06a9\u0646\u062f completed \u0648\u0636\u0639\u06cc\u062a<\/p>\n

\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 useReducer \u0628\u0627 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u062f\u06cc\u0646\u0627\u0645\u06cc\u06a9: \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644 \u0646\u0634\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 useReducer \u0628\u0647\u200c\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc\u200c\u0647\u0627\u06cc \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0648 \u062a\u0648\u062f\u0631\u062a\u0648 \u062f\u0631 \u0645\u062c\u0645\u0648\u0639\u0647\u200c\u0627\u06cc \u0627\u0632 \u0627\u0634\u06cc\u0627\u0621 \u0631\u0627 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0645\u06cc\u200c\u06a9\u0646\u062f \u0648 \u0622\u0646 \u0631\u0627 \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0622\u06cc\u062a\u0645\u200c\u0647\u0627\u06cc\u06cc \u0628\u0627 \u0648\u06cc\u0698\u06af\u06cc\u200c\u0647\u0627\u06cc \u0645\u062a\u0639\u062f\u062f \u0639\u0627\u0644\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n

\u0646\u062a\u06cc\u062c\u0647 \u06af\u06cc\u0631\u06cc<\/p>\n

\u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647\u060c \u0646\u062d\u0648\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u0648\u062b\u0631 \u0631\u0627 \u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u06cc\u062f useReducer \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0648\u0636\u0639\u06cc\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647 \u062a\u0631 \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc React. \u0627\u0632 \u0637\u0631\u06cc\u0642 \u067e\u0631\u0648\u0698\u0647 \u0647\u0627\u06cc \u0645\u0627:<\/p>\n

\u0631\u0627 \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u067e\u06cc\u0634\u0631\u0641\u062a\u0647 \u0646\u0634\u0627\u0646 \u062f\u0627\u062f \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 useReducer \u0628\u0647 \u0631\u0648\u0632 \u0631\u0633\u0627\u0646\u06cc \u0647\u0627\u06cc \u0686\u0646\u062f\u06af\u0627\u0646\u0647 \u062d\u0627\u0644\u062a \u0645\u0628\u062a\u0646\u06cc \u0628\u0631 \u0627\u0642\u062f\u0627\u0645 \u0631\u0627 \u0633\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u062f.
\n\u0631\u0627 \u0641\u0647\u0631\u0633\u062a \u06a9\u0627\u0631\u0647\u0627 \u0646\u062d\u0648\u0647 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0627\u0634\u06cc\u0627\u0621 \u062d\u0627\u0644\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647\u060c \u0645\u0627\u0646\u0646\u062f \u0622\u0631\u0627\u06cc\u0647\u200c\u0647\u0627\u06cc \u0648\u0638\u0627\u06cc\u0641\u060c \u0628\u0627 useReducer.<\/p>\n

\u0628\u0627 useReducer\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u06a9\u062f\u0647\u0627\u06cc \u062a\u0645\u06cc\u0632\u062a\u0631\u060c \u0642\u0627\u0628\u0644 \u067e\u06cc\u0634 \u0628\u06cc\u0646\u06cc \u062a\u0631 \u0648 \u0642\u0627\u0628\u0644 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0628\u0631\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u0645\u062f\u06cc\u0631\u06cc\u062a \u062d\u0627\u0644\u062a \u0642\u0648\u06cc \u062f\u0627\u0631\u0646\u062f \u0628\u0646\u0648\u06cc\u0633\u06cc\u062f. \u0628\u0627 \u0627\u06cc\u0646 \u067e\u0631\u0648\u0698\u0647 \u0647\u0627 \u0622\u0632\u0645\u0627\u06cc\u0634 \u06a9\u0646\u06cc\u062f \u0648 \u062f\u0631 \u0646\u0638\u0631 \u0628\u06af\u06cc\u0631\u06cc\u062f useReducer \u062f\u0641\u0639\u0647 \u0628\u0639\u062f \u06a9\u0647 \u0628\u0627 \u0645\u0646\u0637\u0642 \u067e\u06cc\u0686\u06cc\u062f\u0647 \u062d\u0627\u0644\u062a \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc React \u062e\u0648\u062f \u0645\u0648\u0627\u062c\u0647 \u0645\u06cc \u0634\u0648\u06cc\u062f!<\/p>\n

\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