技術標籤：echartsvue.js

  this.dataVal: any = [
    { name: "參與人數", value: 0 },
    { name: "未參與人數", value: 0 },
  ];
 legend: { 
        formatter: function (name: any) {
          var total = 0;
          var target;
          for (let item of that.dataVal) {
            total += Number
 
(item.value);
            if (item.name == name) {
              target = Number(item.value);
            }
          }
          var arr; 
          if (!total || !target) {
            arr = ["{a|" + name + "} {b| 0%}"];
            return arr;
          }
          arr = ["{a|"
 
 + name + "} {b|" + ((target / total) * 100).toFixed(2) + "%}"];
          return arr;
        },
        textStyle: {
          rich: {
            b: {
              color: "#B6B6B6",
              verticalAlign: "right",
            },
            a: {
              align:
 
 "left",
              width: 100,
            },
          },
        },
      },