mergeCol(id, rowIndex){//this.listData表格数据var idName =this.listData[rowIndex][id]if(rowIndex >0){if(this.listData[rowIndex][id]!=this.listData[rowIndex -1][id]){var i = rowIndex
var num =0while(i <this.listData.length){if(this.listData[i][id]=== idName){
i++
num++}else{
i =this.listData.length
}}return{
rowspan: num,
colspan:1}}else{return{
rowspan:0,
colspan:1}}}else{let i = rowIndex
let num =0while(i <this.listData.length){if(this.listData[i][id]=== idName){
i++
num++}else{
i =this.listData.length
}}return{
rowspan: num,
colspan:1}}},