这是一个完整的折线图加拖拽，可以直接复制到页面中使用，有完整代码，效果图。

说明

• ref=“MainOne” 可以说成每个Echarts图标的标识。
• reportData 图标的数据格式
• selfAdaption 浏览器窗口发生变化调用的方法
• EchartsOne 折线图的方法
• legendSvg 自定义的icon图标
• dataZoom 拖拽方法
• fontFamily 字体方法，可能你们用不了
• handleIcon 拖拽的小点点，可以自定义
• stack 要是想用重叠折线图，将这个方法打开，设置成一样的
• formatter 之所以这么写是有原因的，想知道，就把里面的数据换换位置，再看看页面就知道了

自己写的时候可以将 legendSvg / handleIcon 这两个自定义icon 的方法注释，就是到是怎么用的了。

其他的不是我不写注释，是没太大的必要都是一些设置字体、刻度啥的。

<template>
  <div class="box">
    <div class="main_Echarts_top" ref="MainOne" style="width: 100%"></div>
  </div>
</template>

<script>
// import img from '../images/yuanquan.png'
export default {
  data() {
    return {
      reportData: {
          x: ["W19","W20","W21","W22","W23","W24","W25","W26","W27","W28",],
          y1: ['120', '112', '119', '121', '120', '119', '114', '116', '120', '118'],
          y2: ['102', '99', '105', '105', '103', '105', '102', '103', '103', '102'],
        },
    };
  },
  mounted() {
    this.EchartsOne(this.reportData);
    //拖拽浏览器窗口的时候,会重新计算echarts图标的宽高
    window.addEventListener("resize", this.selfAdaption);
  },
  methods: {
    selfAdaption() {
      let myEchartOne = this.$echarts.init(this.$refs.MainOne);
      myEchartOne.resize();
    },
    EchartsOne(chart_40) {
      var myEchart = this.$echarts.init(this.$refs["MainOne"]);
      const legendSvg = {
        line: "path://M-0.000,-0.000 L10.000,-0.000 L10.000,3.000 L-0.000,3.000 L-0.000,-0.000 Z",
      };
      var option = {
        // title: {
        //     text: 'Phone Channel Inventory $ DOS'
        // },
        tooltip: {
          trigger: "axis",
          formatter: function (params) {
            var relVal = params[0].name;
            for (var i = 0; i < params.length; i++) {
              if (params[i].seriesName == "自己加名字2") {
                relVal += `
                <div>
                  <div>
                      <span style="width: 8px;height: 8px;background: #3AA0F2;
                      display: inline-block;border-radius: 50%;margin-right: 10px;"></span>
                      <span style="fontSize:12px;">${params[1].value}</span>
                  </div>
                </div>`;
              } else {
                relVal += `
                <div>
                  <div>
                    <span style="width: 8px; height: 8px; background: #FE7718;
                    display: inline-block; border-radius: 50%;margin-right: 10px;"></span>
                    <span style="fontSize:12px;">${params[0].value}</span>
                  </div>
                </div>`;
              }
            }
            return relVal;
          },
        },
        legend: {
          data: [
            {
              name: "自己加名字1",
              icon: legendSvg.line,
            },
            {
              name: "自己加名字2",
              icon: legendSvg.line,
            },
          ],
          icon: "line",
          itemWidth: 10,
          itemHeight: 3,
          textStyle: {
            color: "#434549",
            fontSize: 12, //字体大小
            fontFamily: "Pro_Normal",
            fontWeight: "normal",
          },
        },
        grid: {
          top: "16%",
          left: "3%",
          right: "4%",
          bottom: "20%",
          containLabel: true,
        },
        toolbox: {
          feature: {
            // saveAsImage: {}    //下载为图片
          },
        },
        xAxis: {
          type: "category",
          // boundaryGap: false,
          data: chart_40.x,
          nameTextStyle: {
            color: "#65ABE7",
            fontSize: 12,
          },
          axisLabel: {
            textStyle: {
              color: "#5F6A7A", // X轴字体颜色
              fontSize: 12, //字体大小
              fontFamily: "Pro_Normal",
              fontWeight: "normal",
            },
          },
          axisTick: { show: false }, //关闭X轴刻度
          axisLine: { show: false }, //关闭X轴线条
        },
        yAxis: [
          {
            type: "value",
            axisLabel: {
              textStyle: {
                color: "#5F6A7A",
                fontSize: 12,
                fontFamily: "Pro_Normal",
                fontWeight: "normal",
              },
            },
            axisTick: { show: false },
            axisLine: { show: false },
          },
        ],
        dataZoom: {
          show: true,
          icon: legendSvg.line,
          realtime: true,
          brushSelect: false, //取消拖动手柄
          start: 0,
          end: 70,
          height: 24,
          handleSize: "80%",
          // handleIcon: 'image://' + img,  //自定义拖拽图标
          handleIcon: "path://M512,512m-448,0a448,448,0,1,0,896,0a448,448,0,1,0,-896,0Z", //icon图标
          backgroundColor: "#F5F7FA",
        },
        series: [
          {
            name: "自己加名字2",
            type: "line",
            stack: "自己加名字2", //是否堆叠
            // stack: 'Total',
            symbol: "circle",
            symbolSize: 6,
            data: chart_40.y2,
            lineStyle: {
              normal: {
                color: "#FE7718",
              },
            },
            itemStyle: {
              color: "#FE7718",
            },
          },
          {
            name: "自己加名字1",
            type: "line",
            stack: "自己加名字1",
            // stack: 'Total',
            symbol: "circle",
            symbolSize: 6,
            data: chart_40.y1,

            lineStyle: {
              normal: {
                color: "#3AA0F2",
              },
            },
            itemStyle: {
              color: "#3AA0F2",
            },
          },
        ],
      };
      myEchart.setOption(option);
    },
  },
};
</script>

<style lang="scss" scoped>
.box{
  width: 800px;
  height: 400px;
}
.main_Echarts_top{
  width: 800px;
  height: 400px;
}
</style>