React? ??? ????? ??? ????
React? ???? ???? ??? ?? ??? ??? ?? ???? ? ?? ?? ???? ?? ??? ?? ? ????. ? ? ??? ??? UI ??? ???? ??? ??? ????? ??, ?? ? ???? ????.
1. ?? ?? ?? ??
??? ????? JSX? ???? JavaScript ?????. ???? ???? ?? UI ????? ???????. React Hooks? ???? ??? ?? ??? ?? ?????? ?? ?? ? ?? ?? ??? ??? ? ????.
???? ??
const Greeting = ({ name }) => {
return <h1>Hello, {name}!</h1>;
};
2. ??? ???? ??
??? ????? React.Component? ???? ES6 ??????. ??? ? ???? ?? ?? ?? ?? ? ?? ?? ??? ??? ? ????. React Hooks ???? ??? ??? ???? ?? ??? ????? ????????.
??? ????? ?
import React, { Component } from "react";
class Greeting extends Component {
render() {
return <h1>Hello, {this.props.name}!</h1>;
}
}
3. ??? ????? ??? ????? ?? ???
| Aspect | Functional Components | Class Components |
|---|---|---|
| Definition | Defined as a JavaScript function. | Defined as an ES6 class. |
| State Management | Use React Hooks (e.g., useState). | Use this.state for state. |
| Lifecycle Methods | Managed with Hooks like useEffect. | Use built-in lifecycle methods. |
| Syntax Simplicity | Simple and concise. | More verbose with boilerplate. |
| Performance | Generally faster and lightweight. | Slightly slower due to overhead. |
| Usage Trend | Preferred in modern React development. | Common in legacy codebases. |
4. ??? ????: ??? ??
??
- ??? ??: ???? ????? ? ????.
- ??: useState, useEffect ? useContext? ?? ??? ??? ?? ??? ?????.
- ??: ??? ???? ?? ?????.
- ???: ??? ? ???? ? ????.
????
- Hook? ???? ??? ?? ? ?? ?? ??? ?? ?? ???? ??????.
5. ??? ????: ??? ??
??
- ?? ? ?? ??: ?? ? ?? ?? ?? ??? ?? ?? ??? ?????.
- ??? ???: Hooks ??? ??? React ????? ??????.
????
- ??: ? ?? ??? ??(?: ???, ? ???)? ?????.
- ??: ? ??? ????? ??? ??? ?? ?? ?????.
- ??? ??: ??? ?? ??? ?? ??? ???? ?? ? ????????.
6. ?? ? ???? ??
??? ????
React Hooks? ??? ?? ??? ?? ? ?? ?? ???? ?? ???? ?????.
- ??? useState ??:
const Greeting = ({ name }) => {
return <h1>Hello, {name}!</h1>;
};
- ????? useEffect ??:
import React, { Component } from "react";
class Greeting extends Component {
render() {
return <h1>Hello, {this.props.name}!</h1>;
}
}
??? ????
?? ? ?? ?? ???? ???? ??? ? ?? ???? ?????.
- ?? ??:
const Counter = () => {
const [count, setCount] = React.useState(0);
return (
<div>
<p>Count: {count}</p>
<button onClick={() => setCount(count + 1)}>Increment</button>
</div>
);
};
- ???? ??:
const Timer = () => {
React.useEffect(() => {
console.log("Component Mounted");
return () => console.log("Component Unmounted");
}, []);
return <p>Timer is running...</p>;
};
7. ??? ?? ??? ????? ???? ?? ??
?? ?? ??? ???? ??
- ???? React ?????? ??.
- Hooks? ???? UI ??? ??????.
- ?? ??? ?? ?? ???
??? ????? ???? ??
- ?? React ????? ?? ?? ?? ????.
- ??? ?????? ??? ?? ? ?? ?? ??? ?????.
8. ?? ?? ???? ????
Hooks? ???? ??? ?? ??? React ??? ?? ?????. ??, ?? ?? ? ???? ???? ? ???? ???? ??? ?????. ??? ????? ??? ??? ????? ??? ??? ????? ???? ????.
9. ??
??? ?? ??? ??? ?? ?? ?? React ???? ? ??? ????? React Hooks? ???? ???? ??? ?? ??? ??????. ??? ????? ?? ???, ??? ? ??? ??? ???? ??? ?? ??? ???? ?? ????.
? ??? React? ??? ?? ??? ??? ?? ??: ?? ?? ???? ????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!
? AI ??
Undress AI Tool
??? ???? ??
Undresser.AI Undress
???? ?? ??? ??? ?? AI ?? ?
AI Clothes Remover
???? ?? ???? ??? AI ?????.
Clothoff.io
AI ? ???
Video Face Swap
??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!
?? ??
??? ??
???++7.3.1
???? ?? ?? ?? ???
SublimeText3 ??? ??
??? ??, ???? ?? ????.
???? 13.0.1 ???
??? PHP ?? ?? ??
???? CS6
??? ? ?? ??
SublimeText3 Mac ??
? ??? ?? ?? ?????(SublimeText3)
??? ??
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