排序：           <el-radio-group v-model="reverse">             <el-radio :label="true">倒序</el-radio>             <el-radio :label="false">正序</el-radio>           </el-radio-group>   时间树属性讲解：   reverse：控制正序还是排序显示             <el-timeline :reverse="reverse">             <el-timeline-item               v-for="(item, index) in progressData"               :key="index"               :timestamp="item.time"             >               {{ item.context }}             </el-timeline-item>           </el-timeline> data:  

data(){
     return{
       progressData:
     [
      {
       "time": "2018-05-10 09:39:00",
       "ftime": "2018-05-10 09:39:00",
      "context": "已签收,感谢使用顺丰,期待再次为您服务",
      "location": ""
      },
     {
      "time": "2018-05-10 08:23:00",
      "ftime": "2018-05-10 08:23:00",
      "context": "[北京市]北京海淀育新小区营业点派件员 顺丰速运 95338正在为您派件",
     "location": ""
     },
    ]
    reverse: false,
  }
}