State两种绑定方式

import React from 'react';

class App extends React.Component {
  constructor() {
    super();

    this.state = {
      data: []
    };

    this.setStateHandler = this.setStateHandler.bind(this);
  };

  setStateHandler() {
    var item = "设置状态...";
    var myArray = this.state.data;
    myArray.push(item);
    this.setState({data: myArray});
  };

  render() {
    return (
      
 
        
  SET STATE
        
  
State Array: {this.state.data.join()}
      
 
    );
  }
}

export default App;

import React from 'react';

class App extends React.Component {
  constructor() {
    super();

    this.state = {
      data: []
    };
  };

  setStateHandler() {
    var item = "设置状态...";
    var myArray = this.state.data;
    myArray.push(item);
    this.setState({data: myArray});
  };

  render() {
    return (
      
 
        
   this.setStateHandler()}>SET STATE
        
  
State Array: {this.state.data.join()}
      
 
    );
  }
}

export default App;