关于vue.js:echarts折线统计图实现虚实结合

1、需要场景：实现折线统计图，如果蕴含明天，明天用虚线示意，其余用实线
2、实现思路：将一条线进行切割，如明天是 20210909，从 20210901 到 20210909 的区间将其宰割为两段为 20210901-20210908,20210908-20210909
3、具体代码实现：

// 明天设为虚线的办法
//data 须要解决的 y 轴显示数据，dateData 为 x 轴数据 - 日期
setDottedLine(data,dateData){
  // 明天
  let nowTime = new Date()
  let chooseYear = nowTime.getFullYear()
  let chooseMonth = nowTime.getMonth() + 1
  let chooseDate = nowTime.getDate()
  if (chooseMonth < 10) chooseMonth = '0' + chooseMonth
  if (chooseDate < 10) chooseDate = '0' + chooseDate
  let today = `${chooseYear}-${chooseMonth}-${chooseDate}`;
  // 昨天
  let oneday = new Date(nowTime - 1 * 24 * 3600 * 1000);
  let chooseYearonedayago = oneday.getFullYear()
  let chooseMonthonedayago = oneday.getMonth() + 1
  let chooseDateonedayago = oneday.getDate()
  if (chooseMonthonedayago < 10) chooseMonthonedayago = '0' + chooseMonthonedayago
  if (chooseDateonedayago < 10) chooseDateonedayago = '0' + chooseDateonedayago
  let yesterday = `${chooseYearonedayago}-${chooseMonthonedayago}-${chooseDateonedayago}`;
  if(dateData.includes(today)){let newObj = {}
    let arraySolid = [];
    let arrayDotted = [];
    for(let i=0; i<dateData.length; i++){if(dateData[i]==yesterday){arraySolid.push(data[i])
        arrayDotted.push(data[i])
      }else if(dateData[i]==today){arraySolid.push(null)
        arrayDotted.push(data[i])
      }else{arraySolid.push(data[i])
        arrayDotted.push(null)
      }
    }
    this.$set(newObj,'arraySolid',arraySolid) // 实线
    this.$set(newObj,'arrayDotted',arrayDotted) // 虚线
    return newObj
  }else{return data}
}

// 调用

    let ljyhDataResult = this.setDottedLine(ljyhData,xAxisData);
    this.option.series = [
        {
          name: '累计用户',
          data: ljyhDataResult.arraySolid?ljyhDataResult.arraySolid:ljyhDataResult,
          type: 'line',
          symbolSize: 2,
          smooth: 0.5,
          yAxisIndex: 0
        },
        {
          name: '累计用户',
          data: ljyhDataResult.arrayDotted?ljyhDataResult.arrayDotted:ljyhDataResult,
          type: 'line',
          symbolSize: 2,
          smooth: 0.5,
          yAxisIndex: 0,
          lineStyle:{
            normal:{type:'dotted'}
          }
        }
      ],

须要解决提示框显示的问题，采纳以上代码会呈现两次累计用户的 tooltip，须要去重

// 提示框
    tooltip: {
      trigger: 'axis',
      formatter:function(params){
        let str = '';
        let newarray = [];
        let contentarray = [];
        for(let i=0;i<params.length;i++){newarray.push(params[i].axisValue+'<br>')
          if(params[i].data==undefined){ }else{if(['激活率 a','激活率 b'].includes(params[i].seriesName)){newarray.push(params[i].marker+params[i].seriesName+":"+params[i].data+"%<br>");
            }else{newarray.push(params[i].marker+params[i].seriesName+":"+params[i].data+"<br>");
            }
          }
        }
        for(let i=0; i<newarray.length; i++){if(contentarray.indexOf(newarray[i])==-1){contentarray.push(newarray[i])
          }
        }
        for(let i=0; i<contentarray.length;i++){str+=contentarray[i];
        }
        return str;
      }
    },