一.多列合并
一.多列合并一.多列合并1.在el-table中添加:span-method="objectSpanMethod"属性来控制合并单元格，如下图
:span-method="objectSpanMethod"2.合并代码，每一列都要设置一个不同的key，这样可以防止合并的时候上下内容一样导致错误的问题

objectSpanMethod({ row, column, rowIndex, columnIndex }) {

if (columnIndex === 0) {

if (this.myObj[row.channel_type].start === rowIndex) {

return {

rowspan: this.myObj[row.channel_type].step,

colspan: 1

};

} else {

return {

rowspan: 0,

colspan: 0

};

}

}

if (columnIndex === 1) {

if (

this.myObj_two[row.channel_name_chinese + row.channel_type].start ===

rowIndex

) {

return {

rowspan: this.myObj_two[row.channel_name_chinese + row.channel_type]

.step,

colspan: 1

};

} else {

return {

rowspan: 0,

colspan: 0

};

}

}

},

// 合并单元格第一列

resolveData(arr) {

var obj = {};

arr.forEach((val, key) => {

if (!obj[val.channel_type]) {

obj[val.channel_type] = {

start: key,

step: 1

};

} else {

obj[val.channel_type].step++;

}

});

this.myObj = obj;

console.log(obj);

},

// 合并单元格第二列

resolveData_two(arr) {

var obj = {};

arr.forEach((val, key) => {

if (!obj[val.channel_name_chinese + val.channel_type]) {

obj[val.channel_name_chinese + val.channel_type] = {

start: key,

step: 1

};

} else {

obj[val.channel_name_chinese + val.channel_type].step++;

}

});

this.myObj_two = obj;

console.log(this.myObj_two, "this.myObj");

},

objectSpanMethod({ row, column, rowIndex, columnIndex }) {

if (columnIndex === 0) {

if (this.myObj[row.channel_type].start === rowIndex) {

return {

rowspan: this.myObj[row.channel_type].step,

colspan: 1

};

} else {

return {

rowspan: 0,

colspan: 0

};

}

}

if (columnIndex === 1) {

if (

this.myObj_two[row.channel_name_chinese + row.channel_type].start ===

rowIndex

) {

return {

rowspan: this.myObj_two[row.channel_name_chinese + row.channel_type]

.step,

colspan: 1

};

} else {

return {

rowspan: 0,

colspan: 0

};

}

}

},

// 合并单元格第一列

resolveData(arr) {

var obj = {};

arr.forEach((val, key) => {

if (!obj[val.channel_type]) {

obj[val.channel_type] = {

start: key,

step: 1

};

} else {

obj[val.channel_type].step++;

}

});

this.myObj = obj;

console.log(obj);

},

// 合并单元格第二列

resolveData_two(arr) {

var obj = {};

arr.forEach((val, key) => {

if (!obj[val.channel_name_chinese + val.channel_type]) {

obj[val.channel_name_chinese + val.channel_type] = {

start: key,

step: 1

};

} else {

obj[val.channel_name_chinese + val.channel_type].step++;

}

});

this.myObj_two = obj;

console.log(this.myObj_two, "this.myObj");

},
3.需要调用一下下面两个函数，data为你所获取的所有数据

this.resolveData_two(data);

this.resolveData(data);

this.resolveData_two(data);

this.resolveData(data);
4.合并结果如下图