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Extract React Component
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// Before refactoring | |
import React, { Component } from "react"; | |
import "./App.css"; | |
class App extends Component { | |
constructor(props) { | |
super(props); | |
this.state = { isToggleOn: true }; | |
this.handleClick = this.handleClick.bind(this); | |
} | |
handleClick() { | |
this.setState(prevState => ({ | |
isToggleOn: !prevState.isToggleOn | |
})); | |
} | |
render() { | |
return ( | |
<div className="App"> | |
<button onClick={this.handleClick}> | |
{this.state.isToggleOn ? "ON" : "OFF"} | |
</button> | |
</div> | |
); | |
} | |
} | |
export default App; |
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// After the refactoring | |
import React, { Component } from "react"; | |
import "./App.css"; | |
import { Button } from "./Button"; | |
class App extends Component { | |
constructor(props) { | |
super(props); | |
this.state = { isToggleOn: true }; | |
this.handleClick = this.handleClick.bind(this); | |
} | |
handleClick() { | |
this.setState(prevState => ({ | |
isToggleOn: !prevState.isToggleOn | |
})); | |
} | |
render() { | |
return ( | |
<div className="App"> | |
<Button handleClick={this.handleClick} toggleOn={this.state.isToggleOn}/> | |
</div> | |
); | |
} | |
} | |
export default App; |
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