react-study/src/components/New.js

import React, {Component} from 'react';
import PubSub from 'pubsub-js'
class New extends Component {
    constructor(props) {
        super(props);
        this.state = {
            num: 5,
            ztext: 'yasaka'
        }
    }

    fun = () => {
        this.setState({num: this.state.num + 1})
    }

    render() {
        return (
            <div>
                父组件传过来值为 ---- {this.props.text} -- {this.state.num}
                <button onClick={this.fun}>click</button>
                <button onClick={this.props.call.bind(this,this.state.ztext)}>up data</button>
                <button onClick={()=>{
                    PubSub.publish("vtt","call you!")
                }}>call pub</button>
            </div>
        );
    }
}

export default New;