vue+element ui 时间格式化

  <el-table-column prop="startTime" label="日期" width="200" align="center" :formatter="formatStartTime" />

    formatStartTime(row, column) {
      const value = row.createTime
      var year = value.substr(0, 4)
      var month = value.substr(4, 2)
      var day = value.substr(6, 2)
      var hour = value.substr(8, 2)
      var minute = value.substr(10, 2)
      var second = value.substr(12, 2)
      return year + '-' + month + '-' + day + ' ' + ' ' + hour + ':' + minute + ':' + second
    },

　　<el-table-column property="createDate" label="时间" :formatter="dateFormat" />


dateFormat(row, column, cellValue, index) {
      var date = cellValue
      if (!date) {
        return ''
      }
      return moment(date).format('YYYY-MM-DD')
    },