react自动增长

//自动调整
export default class test1 extends Component{
  constructor(props) {
    super(props);
    this.handleChange = this.handleChange.bind(this)
    this.state={
      items:[],
      text:''
    }
  }


  handleChange(e) {
    console.log(e.target.value)
    this.setState({
      text: e.target.value
    })
  };

  render(){
    return(
      <div>
        <h1>test:{this.state.text}</h1>
        {/*<listtest></listtest>*/}
        <form>
          <input id="name1" onChange={this.handleChange.bind(this)}/>
          <button id="button" onClick={this.handleSubmit.bind(this)}>add</button>
        </form>
      </div>
    );
  }
}