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I created this simple TODO list, and when I want to check the checkbox I can't.
import React from 'react'; const TodoItem = React.createClass({ render() { return ( <div> <span>{this.props.todo}</span> <input type="checkbox" checked={this.props.done} /> </div> ); } }); export default TodoItem; The parent:
import React from 'react'; import TodoItem from './TodoItem'; import AddTodo from './AddTodo'; const TodoList = React.createClass({ getInitialState() { return { todos: [{ todo: 'some text', done:false },{ todo: 'some text2', done:false }, { todo: 'some text3', done:true }] }; }, addTodo (childComponent) { var todoText = childComponent.refs.todoText.getDOMNode().value; var todo = { todo: todoText, done:false }; var todos = this.state.todos.concat([todo]); this.setState({ todos:todos }); childComponent.refs.todoText.getDOMNode().value = ''; }, render() { var Todos = this.state.todos.map(function(todo) { return ( <TodoItem todo={todo.todo} done={todo.done} /> ) }); return ( <div> {Todos} <AddTodo addTodo={this.addTodo}/> </div> ); } }); export default TodoList; 
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Using setState with React Checkbox onChange Toggle the text of a paragraph with the checkbox using the 'useState' hook. */ import React, {useState} from 'react'; function Checkbox() { const [checked, setChecked] = useState(false); const handleChange = () => { setChecked(! checked); }; return ( <div> <p> {checked ?
To uncheck a checkbox programmatically in React, we can set the checked prop of the checkbox to a state. We have the checked state that we used to set the checked prop of the checkbox. Then we add a button that calls setChecked to toggle the checked value when we click the button.
Use the target. checked property on the event object to check if a checkbox is checked in React, e.g. if (event. target. checked) {} .
The <input type="checkbox"> defines a checkbox. The checkbox is shown as a square box that is ticked (checked) when activated. Checkboxes are used to let a user select one or more options of a limited number of choices. Tip: Always add the <label> tag for best accessibility practices!
When you haven't specified an onChange handler on your inputs React will render the input field as read-only.
getInitialState() { return { done: false }; } and
<input type="checkbox" checked={this.state.done || this.props.done } onChange={this.onChange} /> If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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