1.效果

2.html

3.js

 spanMethod({ row, column, rowIndex }) {if (column.property === 'deviceName') {if (rowIndex > 0 && row.deviceName === this.data[rowIndex - 1].deviceName) {return {rowspan: 0,colspan: 1,};}let rowspan = 1;for (let i = rowIndex + 1; i < this.data.length; i++) {if (this.data[i].deviceName === row.deviceName) {rowspan++;} else {break;}}return {rowspan: rowspan,colspan: 1,};} else if (column.property === 'deviceCode') {if (rowIndex > 0 && row.deviceCode === this.data[rowIndex - 1].deviceCode) {return {rowspan: 0,colspan: 1,};}let rowspan = 1;for (let i = rowIndex + 1; i < this.data.length; i++) {if (this.data[i].deviceCode === row.deviceCode) {rowspan++;} else {break;}}return {rowspan: rowspan,colspan: 1,};} else if (column.property === 'installSite') {if (rowIndex > 0 && row.installSite === this.data[rowIndex - 1].installSite) {return {rowspan: 0,colspan: 1,};}let rowspan = 1;for (let i = rowIndex + 1; i < this.data.length; i++) {if (this.data[i].installSite === row.installSite) {rowspan++;} else {break;}}return {rowspan: rowspan,colspan: 1,};}// 其他列不进行合并return {rowspan: 1,colspan: 1,}},