react获取input的value值

import React, { Component } from 'react';
class App extends Component {
  constructor(props) {
    super(props);
    this.state = {
      inputValue: ''
    };
  }
  handleInputChange = (event) => {
    this.setState({
      inputValue: event.target.value
    });
  }
  render() {
    return (
      <div>
        <input type="text" value={this.state.inputValue} onChange={this.handleInputChange} />
        <p>{this.state.inputValue}</p>
      </div>
    );
  }
}
export default App;