把合计变成千位分割符，两位小数

formatterThousandNews(cellValue) {
      return cellValue && cellValue.toLocaleString('en-US', {
        minimumFractionDigits: 0,
        maximumFractionDigits: 4
      })
    },
{{ formatterThousandNews(scope.row[item.fieldname]) }}
合计：{{ choiceTotal }}
computed: {
    choiceTotal() {
      const sum = this.multipleSelection.reduce((acc, cur) => { acc += cur.dblamount; return acc }, 0)
      return parseFloat(sum.toFixed(2)).toLocaleString()
    }
  }

// 千分位小数formatter
export function formatterThousandDecimal(row, column, cellValue) {
  if ((cellValue !== null && cellValue) || cellValue === 0) {
    cellValue = Number(cellValue).toFixed(2)
    cellValue += ''
    if (!cellValue.includes('.')) cellValue += '.'
    return cellValue.replace(/(\d)(?=(\d{3})+\.)/g, function($0, $1) {
      return $1 + ','
    }).replace(/\.$/, '')
  }
}

<el-table-column
            v-if="bodyIntpreset.dblpriceIsview===0"
            key="dblprice"
            prop="dblprice"
            :label="bodyIntpreset.dblpriceshowname"
            min-width="140"
            align="right"
            :width="headWidth.dblprice"
            :formatter="formatterThousandDecimal"
          />
<span v-if="pageType==='detail'">
                {{ formatterThousandDecimal(null,null,scope.row.dblpayprice) }}
{{dblamount |currency}}
              </span>

<div v-if="pageType === 'detail' && !isEdit('dblamount')">{{ scope.row.dblamount| currency }}</div>
import XEUtils from 'xe-utils'
export function formatterCommafyFixed(row, column, cellValue) {
  return cellValue && XEUtils.commafy(XEUtils.toFixed(cellValue, 2))
}
this.allDblamount = XEUtils.commafy(XEUtils.toFixed(allDblamount, 2))