import 'babel-polyfill';
import React from 'react';
import ReactDOM from 'react-dom';
import './index.scss'

class TabButton extends React.Component {

    constructor(props) {
      super(props);
      this.state = {
        markArray: [0, 0, 0, 0], 
        itemClassName:'tab-button-item'
      };
      this.activateButton = this.activateButton.bind(this);
    }

    // 根据参数id, 来确定激活四个item中的哪一个
    activateButton(id) {
      let tmpMarkArray = [0, 0, 0, 0]
      tmpMarkArray[id] = 1;
      this.setState({markArray: tmpMarkArray});
    }

    render() {
      return ( 

        <div className = "tab-button" >

        <div className = {(this.state.markArray)[0] "tab-button-item-active" : "tab-button-item" } onClick = { this.activateButton.bind(this, 0) } > 零 </div> 
        <div className = {(this.state.markArray)[1] "tab-button-item-active" : "tab-button-item" } onClick = { this.activateButton.bind(this, 1) } > 壹 </div> 
        <div className = {(this.state.markArray)[2] "tab-button-item-active" : "tab-button-item" } onClick = { this.activateButton.bind(this, 2) } > 贰 </div> 
        <div className = {(this.state.markArray)[3] "tab-button-item-active" : "tab-button-item" } onClick = { this.activateButton.bind(this, 3) } > 叁 </div>

        </div>)
      }

    }

    ReactDOM.render( < TabButton / > , document.getElementById("root"));