按照日期排序

 this.list.sort(function(a,b){
               var dateA = new Date(a.StartTime)
               var dateB = new Date(b.StartTime)
               return dateA <= dateB ? 1 : -1;
           })  

table按照不同值显示不同颜色

<template v-slot="scope">
                    <span v-if="scope.row.Priority=== 'critical'" style="color: #F56C6C">致命</span>
                    <span v-else-if="scope.row.Priority==='major'" style="color: #E6A23C">严重</span>
                     <span v-else-if="scope.row.Priority==='minor'" style="color: #67C23A">一般</span>                    
                </template>