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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>First React App</title> | |
| <script crossorigin src="https://unpkg.com/react@16/umd/react.development.js"></script> | |
| <script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script> | |
| <script src='https://unpkg.com/babel-standalone@6/babel.min.js'></script> | |
| </head> | |
| <body> | |
| <div id='app'></div> | |
| <script type='text/babel'> | |
| function ActiveFriends (props) { | |
| return ( | |
| <div> | |
| <h2>Active Friends</h2> | |
| <ul> | |
| {props.list.map((friend) => ( | |
| <li key={friend.name}> | |
| <span>{friend.name}</span> | |
| <button onClick={() => props.onRemoveFriend(friend.name)}>Remove</button> | |
| <button onClick={() => props.onToggleFriend(friend.name)}>Deactivate</button> | |
| </li> | |
| ))} | |
| </ul> | |
| </div> | |
| ) | |
| } | |
| function InactiveFriends (props) { | |
| return ( | |
| <div> | |
| <h2>Inactive Friends</h2> | |
| <ul> | |
| {props.list.map((friend) => ( | |
| <li key={friend.name}> | |
| <span>{friend.name}</span> | |
| <button onClick={() => props.onToggleFriend(friend.name)}>Activate</button> | |
| </li> | |
| ))} | |
| </ul> | |
| </div> | |
| ) | |
| } | |
| class App extends React.Component { | |
| constructor(props) { | |
| super(props) | |
| this.state = { | |
| friends: [ | |
| { | |
| name: 'Jordyn', | |
| active: true, | |
| }, | |
| { | |
| name: 'Mikenzi', | |
| active: true, | |
| }, | |
| { | |
| name: 'Jake', | |
| active: false | |
| } | |
| ], | |
| input: '', | |
| } | |
| this.handleRemoveFriend = this.handleRemoveFriend.bind(this) | |
| this.updateInput = this.updateInput.bind(this) | |
| this.handleAddFriend = this.handleAddFriend.bind(this) | |
| this.handleToggleFriend = this.handleToggleFriend.bind(this) | |
| } | |
| handleAddFriend() { | |
| this.setState((currentState) => { | |
| return { | |
| friends: currentState.friends.concat([{ | |
| name: this.state.input, | |
| active: true | |
| }]), | |
| input: '' | |
| } | |
| }) | |
| } | |
| handleRemoveFriend(name) { | |
| this.setState((currentState) => { | |
| return { | |
| friends: currentState.friends.filter((friend) => friend.name !== name) | |
| } | |
| }) | |
| } | |
| handleToggleFriend(name) { | |
| this.setState((currentState) => { | |
| const friend = currentState.friends.find((friend) => friend.name === name) | |
| return { | |
| friends: currentState.friends.filter((friend) => friend.name !== name) | |
| .concat([{ | |
| name, | |
| active: !friend.active | |
| }]) | |
| } | |
| }) | |
| } | |
| updateInput(e) { | |
| const value = e.target.value | |
| this.setState({ | |
| input: value | |
| }) | |
| } | |
| render() { | |
| return ( | |
| <div> | |
| <input | |
| type='text' | |
| placeholder='new friend' | |
| value={this.state.input} | |
| onChange={this.updateInput} | |
| /> | |
| <button onClick={this.handleAddFriend}> | |
| Submit | |
| </button> | |
| <div> | |
| <button onClick={() => this.setState({ | |
| friends: [] | |
| })}>Clear All</button> | |
| </div> | |
| <ActiveFriends | |
| list={this.state.friends.filter((friend) => friend.active === true)} | |
| onRemoveFriend={this.handleRemoveFriend} | |
| onToggleFriend={this.handleToggleFriend} | |
| /> | |
| <InactiveFriends | |
| list={this.state.friends.filter((friend) => friend.active === false)} | |
| onToggleFriend={this.handleToggleFriend} | |
| /> | |
| </div> | |
| ) | |
| } | |
| } | |
| ReactDOM.render( | |
| <App />, | |
| document.getElementById('app') | |
| ) | |
| </script> | |
| </body> | |
| </html> |
Thank you so much for your invaluable lessons.
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you da man!