vue echarts柱状图点击柱子变色

默认样式，点击柱子切换颜色

 <div
    style="width: auto; height: 300px; margin-top: 20px"
    ref="echart"
  >div>

<script>
import * as echarts from "echarts";
export default {
   mounted() {
   	this.getEcharts();
  },
  methods: {
  	getEcharts() {
      let myChart = echarts.init(this.$refs.echart);
      let checkName = ""; //当前点击的柱状图横坐标名称
      var option = {
      tooltip: {//鼠标移入切换背景色
          trigger: "axis",
          showDelay: 0, // 显示延迟，添加显示延迟可以避免频繁切换，单位ms
          axisPointer: {
            type: "shadow",
            shadowStyle: {
              color: "rgba(255,171,96, 0.15)",
              width: "1",
            },
          },
        },
        xAxis: {
          type: "category",
          data: ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"],
        },
        yAxis: {
          type: "value",
        },
        series: [
          {
            data: [
              120,
              {
                value: 200,//上边那个数也可以写成这样
              },
              150,
              80,
              70,
              110,
              {
                value: 130,
                itemStyle: {
                  color: "#FFAB60",//给最后一根柱子添加默认颜色，不想要可以直接删了
                },
              },
            ],
            type: "bar",
            //重点
            itemStyle: {
              color: function (params) {
                if (checkName === params.name) {
                  return "#FFAB60"; //点击的柱子颜色发生改变
                } else {
                  return "#E9EAEC"; //这里是柱子的默认颜色
                }
              },
              emphasis: {
                color: "#ffe3ca", //鼠标移入时改变柱子的颜色
              },
            },
          },
        ],
      };
      myChart.setOption(option);
      //柱子添加点击事件
      myChart.on("click", function (params) {
        checkName = params.name;
        delete option
          .series[0].data[option.series[0].data.length - 1].itemStyle; //点击删了默认最后一根柱子的颜色
        myChart.setOption(option); //柱状图数据重组
      });
    },
  }
}
</script>