react实现点击选中的li高亮的示例代码

  class Category extends React.Component {  constructor(props) {    super(props)    this.state = {      currentIndex: 0    }    this.setCurrentIndex = this.setCurrentIndex.bind(this)  }  setCurrentIndex(event) {    this.setState({      currentIndex: parseInt(event.currentTarget.getAttribute('index'), 10)    })  }  render() {    let categoryArr = ['产品调整', '接口流量', '负载均衡', '第三方软件调整',              '安全加固', '性能控制', '日志查询', '业务分析'];    let itemList = [];    for(let i = 0; i < categoryArr.length; i++) {      itemList.push(<li key={i}               className={this.state.currentIndex === i ? 'active' : ''}               index={i} onClick={this.setCurrentIndex}             >{categoryArr[i]}</li>);    }    return <ul className="category">{itemList}</ul>  }}

   .category {      padding-left: 0;      &:after {        content: '';        display: block;        clear: both;      }      li {        float: left;        width: 23%;        height: 40px;        margin-right: 10px;        margin-bottom: 10px;        border: 1px solid $border-color;        list-style: none;        color: $font-color;        line-height: 40px;        text-align: center;        font-size: 14px;        cursor: pointer;        &.active {          border-color: #079ACD;        }     }