echarts 控制图例显示隐藏以及自适应的方法

当屏幕大小发生变化，echarts没有进行自适应，我们可以使用它的resize()方法去解决。
当echarts的组件放在el-tabs里面的el-tab-pane切换时，echarts的自适应会跟不上，所以每次回到echarts重新调用resize()方法

<template>
  <div>
    <div @click="tableShowClick"> 5656div>
    <charts ref="charts" :charts-data="tableData">charts>
  div>
template>
<script>
  import Charts from "./charts";
  export default {
    methods:{
    // 当因为echarts 外的因素，并非el-tab-pane的切换，而是与echarts同一个层内其它的因素导致echarts需要重新进行自适应时的操作。
      tableShowClick(){
        this.tableShow = !this.tableShow;
          setTimeout(() => {
            this.$refs.charts.resize();
          }, 2);
        },
      }
  }
script>

charts.vue

<template>
  <div class="echarts">div>
template>
<script>
import echarts from "echarts";
// require('echarts/theme/macarons') // echarts theme
import resize from "../../../../dashboard/mixins/resize";
export default {
mixins: [resize],
  props: {
    chartsData: {
      type: Object,
      default: () => ({}),
    },
    autoResize: {
      type: Boolean,
      default: true,
    },
    width: {
      type: String,
      default: "100%",
    },
    height: {
      type: String,
      default: "100%",
    },
  },
  data() {
    return {
      chart: null,
      data: [], 
      series: [],
    };
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  watch: {
    chartsData: {
      handler(val) {
        this.initChart(val);
      },
      deep: true,
    }
  },
  methods: {
    initChart(data) {
      this.chart = echarts.init(this.$el);
      let option = {
      series: [
      // 单独控制某条柱状图的颜色
       {
            type: "bar",
            itemStyle: {
              normal: {
                color: function (params) {
                  // console.log(params);
                  if (params.name == new Date().getFullYear()) {
                    return "red";
                  } else {
                    return "black";
                  }
                },
              },
            },
          },
       ]
      }
      // 避免重复促发控制图例显示隐藏的操作
      this.chart.off("legendselectchanged");
      // 控制图例显示隐藏
      this.chart.on("legendselectchanged", (e) => {
        var change = this.chart.getOption();
        let name = "";
        let yTitle = "";
        let selected = {};
        if (e.name.indexOf("水位") != -1) {
          name = "水位";
          if (e.selected[data.zTitle]) {
            this.$set(selected, data.qTitle, false);
            this.$set(selected, "10年水位均值", true);
            this.$set(selected, "10年流量均值", false);
          } else if (e.selected["10年水位均值"]) {
            this.$set(selected, data.zTitle, true);
            this.$set(selected, data.qTitle, false);
            this.$set(selected, "10年流量均值", false);
          }
        } else {
          name = "流量";
          if (e.selected[data.qTitle]) {
            this.$set(selected, data.zTitle, false);
            this.$set(selected, "10年水位均值", false);
            this.$set(selected, "10年流量均值", true);
          } else if (e.selected["10年流量均值"]) {
            this.$set(selected, data.zTitle, false);
            this.$set(selected, data.qTitle, true);
            this.$set(selected, "10年水位均值", false);
          }
        }
        switch (name) {
          case "水位":
            yTitle = "水位(m)";
            break;
          case "流量":
            yTitle = "流量(m³/s)";
            break;
        }
        this.chart.setOption({
          yAxis: { name: yTitle }, // 改变y轴的name
          legend:{
            selected:selected  // 改变legend的selected状态
          }
        });
      });
      this.chart.clear();
      this.chart.setOption(option);
    }
  }
}
script>
<style lang="scss" scoped>
.echarts {
  width: 100%;
  height: calc(100vh - 170px);  // 设定了高度那么echarts的自适应更顺滑，如果没必要使用resize()方法的话，直接设定该高度便可
}
style>