react how to pass the input target value
class NameForm extends React.Component {
constructor(props) {
super(props);
this.state = {value: ''};
this.handleChange = this.handleChange.bind(this);
}
handleChange(event) {
this.setState({value: event.target.value});
}
render() {
return (
<form>
<label>
Name:
<input type="text" value={this.state.value} onChange={this.handleChange} />
</label>
<input type="submit" value="Submit" />
</form>
);
}
}
handle onchange react
import React, { Component } from 'react';
import './App.css';
import Header from './Header';
class App extends Component {
constructor(props) {
super(props);
this.state = {name: "Michael"}
}
changeTitle = (e) =>{
this.setState({name: e.target.value});
}
render() {
return (
<div className="App">
<Header title={this.state.name}/>
<p className="App-intro">
Type here to change name.
<input type="text" onChange={this.changeTitle}/>
</p>
</div>
);
}
}
export default App;
what does onchange do in react
In React, onChange is used to handle user input in real-time.
If you want to build a form in React, you need to use this event to track
the value of input elements.