Created
April 5, 2018 13:15
-
-
Save chiamakaikeanyi/31ee18ea7f87a588a1b0f7fa53a4e6e4 to your computer and use it in GitHub Desktop.
React Lifting State Up
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| //HTML | |
| <div id="root"></div> | |
| //JSX | |
| class Details extends React.Component{ | |
| render(){ | |
| return <h1>{this.props.details}</h1> | |
| } | |
| } | |
| class Button extends React.Component{ | |
| render(){ | |
| return( | |
| <button style = {{color: this.props.active ? 'red' : 'blue' }} onClick = {() => {this.props.clickHandler(this.props.id, this.props.name)}}> | |
| {this.props.name} | |
| </button> | |
| ) | |
| } | |
| } | |
| class App extends React.Component{ | |
| constructor(props){ | |
| super(props) | |
| this.state = {activeArray:[0,0,0,0], details:""} | |
| this.clickHandler = this.clickHandler.bind(this) | |
| } | |
| clickHandler(id, details){ | |
| var arr = [0,0,0,0] | |
| arr[id] = 1 | |
| this.setState({activeArray:arr, details:details}) | |
| console.log(id,details) | |
| } | |
| render(){ | |
| return( | |
| <div> | |
| <Button name="Vanilla" id = {0} active = {this.state.activeArray[0]} clickHandler = {this.clickHandler}/> | |
| <Button name="Angular" id = {1} active = {this.state.activeArray[1]} clickHandler = {this.clickHandler}/> | |
| <Button name="React" id = {2} active = {this.state.activeArray[2]} clickHandler = {this.clickHandler}/> | |
| <Button name="Vue" id = {3} active = {this.state.activeArray[3]} clickHandler = {this.clickHandler}/> | |
| <Details details = {this.state.details} /> | |
| </div> | |
| ) | |
| } | |
| } | |
| ReactDOM.render(<App/>, document.getElementById('root')) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment