How to Enter Text By User Input in React JS

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I am trying to get the user to input data for my TODO App instead of picking up data from a predefined array.

Below is my Parent component

import React from "react"
import TodoItem from "./TodoItem"
import todosData from "./todosData"

class App extends React.Component {
    constructor() {
        super()
        this.state = {
            name: "",
            todos: todosData
        }
        this.handleChange = this.handleChange.bind(this)
        this.nameEnter = this.nameEnter.bind(this)
    }

    handleChange(id) {
        this.setState(prevState => {
            const updatedTodos = prevState.todos.map(item => {
                if (item.id === id){
                    return {
                         ...item,
                         completed: !item.completed
                    }
                }
                    return item
            })
            return {
                todos: updatedTodos
            }
        })

    }
    nameEnter(){
        var name = this.name
        console.log(name)
        }

    render() {
        const todoItems = this.state.todos.map(item => <TodoItem key={item.id} item={item}
        handleChange = {this.handleChange} nameEnter= {this.nameEnter}/>)

        return (
            <div className="todo-list">
                {todoItems}
            </div>
        )    
    }
}
export default App   

This one is the child component where I have added input fields

import React from "react"
function TodoItem(props) {

    return (
        <div className="todo-item">
            <input 
                type = "checkbox" 
                checked = {props.item.completed} 
                onChange = { () => props.handleChange(props.item.id) }    
            />
            <input type = "text" name= "name" />

            <p>{props.item.text}</p>
        </div>
    )
}

export default TodoItem

This is how my page looks. Instead of predefined text example:"GROCERRY SHOPPING", I want the user to enter text and it should be in place of that.

Ok so here it is

<input onChange={(e)=>handleChange(e)}/>


//react hooks
const [values,setValues] = useState({inputValue: 'predefined'});
handleChange = (e)=>{
setValues({...values,[e.target.name]: e.target.value})
}

//classes
handleChange = (e)=>{
this.setState({[e.target.name]:e.target.value});
}

this generic and can apply to a number of inputs, not just one

How to Work with Forms, Inputs and Events in React, In React, when working with forms or any other user input fields such as If developers opt NOT to maintain the component state (in JavaScript), nor render() { return <input type=”text” name=”title” value={this.state.title} />}. In this chapter, we will show you how to work with TextInput elements in React Native. The Home component will import and render inputs. App.js import React from 'react'; import Inputs from './inputs.js' const App = => { return ( <Inputs /> ) } export default App Inputs. We will define the initial state.

import React from "react"

class Form extends React.Component {
    constructor() {
        super()
        this.state = {
            name: ""
        }
    }

    onChange = (e) => {
      this.setState({
        [e.target.name]: e.target.value 
      }) 
    }

    render() {
        const {name} = this.state
        return (
            <input type="text" name="name" value={name} onChange={this.onChange}/>
        )    
    }
}
export default Form

How to get the value of an input field using ReactJS?, So we tell React to use the updateInputValue function to handle the user state to the server code } render(){ return ( <div> <input type="text" onChange={this. Now open the index.js file in the browser and type kagga in the name input field and 30 in the age input field then click the save button. A new card will be added on the page as shown in the

changeInputVal (ev, index) {
        ev.persist();
        const newArr = this.state.inputArrVal;
        newArr[index]=ev.target.value;
        this.setState({inputArrVal:newArr, currentPage:1});   
    }

Handling Text Input � React Native, TextInput`](textinput#content) is a [Core Component](intro-react-native- components) that allows the user to enter text. It has an `onChangeText` prop that takes a� Conditional Rendering. If you do not want to display the h1 element until the user has done any input, you can add an if statement. Look at the example below and note the following:

Handle user input - Build web apps with ReactJS, Writing an event handler that passes user input to the handler passed in from the parent. <input type="text" name="category" onChange={this. Following updates to ReactJS the code in the following section may no longer� In the traditional HTML form elements, the state of the elements will change with the user input. React uses a declarative approach to describe the UI. The input needs to be dynamic to reflect the

React Forms, Just like in HTML, React uses forms to allow users to interact with the web page. is handled by the components, all the data is stored in the component state . <form> {header} <p>Enter your name:</p> <input type='text' onChange={this. Understand React and JavaScript frameworks Use 'create-react-app' to build your React app Look at what's been installed and generated Mounting React inside the webpage Check out the `App` component Start serving and developing your React app Quiz: Understanding React Components and props Build a ticking clock component Handle events Understand

In HTML, an <input type="file"> lets the user choose one or more files from their device storage to be uploaded to a server or manipulated by JavaScript via the File API. < input type = " file " /> Because its value is read-only, it is an uncontrolled component in React.

Comments
  • update the text with state and subscribe to that change.
  • i have updated my code. Can u please take a look.
  • You should use onChange = { (event) => props.handleChange(event, id) } in your input. That way your handleChange function will receive the event object which contains the value through event.target.value and the id through the second parameter.
  • you can pass the onChange = { (event) => props.handleChange(event, props.item.id) } and use handleChange = (event, id) => { console.log(event.target.checked) }