Created
September 27, 2016 16:58
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Simple React Todo
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| class Todo extends React.Component { | |
| render() { | |
| const { todo } = this.props; | |
| return ( | |
| <li className={todo.completed ? 'todo-completed' : ''}> | |
| <input type="checkbox" onClick={this.props.onToggle.bind(null, todo)}/> | |
| {todo.text} | |
| </li> | |
| ); | |
| } | |
| } | |
| class AddTodo extends React.Component { | |
| constructor(props) { | |
| super(props); | |
| this.state = { text: '' }; | |
| } | |
| handleChange(event) { | |
| this.setState({ text: event.target.value }); | |
| } | |
| handleAdd(event) { | |
| event.preventDefault(); | |
| const newTodo = { text: this.state.text, completed: false } | |
| this.props.onAdd(newTodo); | |
| this.setState({ text: '' }); | |
| } | |
| render() { | |
| return ( | |
| <form> | |
| <input type="text" value={this.state.text} onChange={this.handleChange.bind(this)} /> | |
| <button onClick={this.handleAdd.bind(this)}>Add Todo</button> | |
| </form> | |
| ); | |
| } | |
| } | |
| class TodoApp extends React.Component { | |
| constructor(props) { | |
| super(props); | |
| this.state = { todos: [ | |
| { | |
| text: 'Feed the cats', | |
| completed: false | |
| } | |
| ] }; | |
| } | |
| renderTodo(todo, index) { | |
| return <Todo key={index} todo={todo} onToggle={this.toggleTodo.bind(this)} />; | |
| } | |
| toggleTodo(todo) { | |
| this.setState({ | |
| todos: this.state.todos.map(theTodo => { | |
| if (theTodo.text === todo.text) { | |
| return { text: theTodo.text, completed: !theTodo.completed }; | |
| } | |
| return theTodo; | |
| }) | |
| }); | |
| } | |
| addTodo(todo) { | |
| this.setState({ | |
| todos: this.state.todos.concat([todo]) | |
| }); | |
| } | |
| render() { | |
| return ( | |
| <div> | |
| <h1>Todo List</h1> | |
| <ul> | |
| {this.state.todos.map(this.renderTodo.bind(this))} | |
| </ul> | |
| <AddTodo onAdd={this.addTodo.bind(this)} /> | |
| </div> | |
| ); | |
| } | |
| } | |
| ReactDOM.render(<TodoApp />, document.getElementById('app')); |
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