echarts三个月份数据对比图 实现思路

legend展示数据与tooltips数据不一致
先看结果：展示出来的legend

鼠标滑过当前日期展示的tooltips数据

这里的难点就是前两个月份的数据如何渲染上去到tooltips中，前两个月份的数据不在echarts的展示列。不能常规的series渲染。
后端给的数据（前两个月份的数据），都是放在series中的，和当月成功量，失败量并排。现在的实现思路是：

1. 新增一个Y轴，给这个Y轴隐藏掉，看不见
2. 将5，4，3月份的数据拼接成 如下格式（）"800|800|800"，push到series数组中，隐藏掉
3. 将要展示的在tooltip中的数据添加到series中，然后在tooltips里面自定义将字符串split解析展示

{
                  name:"总业务量(笔)",
                  type:'line',
                  data:["800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800","800|800|800",],
                  "yAxisIndex":"3",
                },

          option.tooltip = {
            trigger: "axis",
            formatter: (params) => {
              let title = "";
              let titleArr = params[11].value.split("|");
              for (let k = 0; k < titleArr.length; k++) {
                let titItem = titleArr[k];
                if (titItem.split("/")[0] && titItem.split("/")[1]) {
                  title += `
                      
                        ${titItem.split("/")[0]}月${titItem.split("/")[1]}日
                      
                      `;
                } else {
                  title += `
                      
                      
                      `;
                }
              }
              let curString = `
                  

                    
                    ${title}
                  
                `;
              let tableData = [
                params[5],
                params[6],
                params[7],
                params[8],
                params[9],
                params[10],
              ];
              for (let i = 0; i < tableData.length; i++) {
                let curVal = tableData[i];
                let curValArr = curVal.value.split("|");
                curString += `
                    

                      ${
                        curVal.seriesName
                      }
                      ${
                        curValArr[0]
                      }${curValArr[0] && i == 3 ? "%" : ""}
                      ${
                        curValArr[1]
                      }${curValArr[1] && i == 3 ? "%" : ""}
                      ${
                        curValArr[2]
                      }${curValArr[2] && i == 3 ? "%" : ""}
                    
                  `;
              }
              return curString;
            },
          };