Echarts 横向与纵向柱状图实战：动态切换、自适应与样式定制

<script>
  import * as R from "ramda";

  const source1 = [
    ["1月", 1330, 666, 560],
    ["2月", 820, 760, 660],
    ......
    ["11月", 901, 880, 360],
    ["12月", 934, 600, 700],
  ];
  const source2 = [
    ["1日", 1330, 666, 560],
    ["2日", 820, 760, 660],
    ......
    ["29日", 934, 600, 700],
    ["30日", 1330, 666, 560],
  ];

  // 具体配置如之前所示，详细省略，只做基本示例展示
  const initOption = {
    ...
    dataset: { source: source1 },
  };

  export default {
    data() {
      return {
        charts: null,
        isDaily: false,
      };
    },
    mounted() {
      this.charts = this.$echarts.init(
        document.getElementById("barCharts"),
        null,
        {
          renderer: "svg",
        }
      );
      this.charts.setOption(R.clone(initOption));
    },
    methods: {
      handleSource() {
        this.isDaily = !this.isDaily;
        this.charts.setOption(
          R.mergeDeepRight(initOption, {
            // 动态更新数据源
            dataset: {
              source: this.isDaily ? source2 : source1,
            },
            xAxis: {
              // 动态更新标签间隔
              axisLabel: {
                interval: this.isDaily ? 4 : "auto",
              },
            },
            series: R.map(
              // 动态更新柱体宽度
              (o) => ((o.barWidth = this.isDaily ? 12 : 24), o),
              initOption.series
            ),
          }),
          true
        );
        this.charts.resize();
      },
    },
  };
</script>

<script>
  export default {
    mounted() {
      window.addEventListener("resize", this.handleResize, false);
    },
    destroyed() {
      window.removeEventListener("resize", this.handleResize);
    },
    methods: {
      handleResize() {
        const _this = this;
        const timer = setTimeout(() => {
          _this.lineCharts.resize();
          _this.barCharts.resize();
        }, 500);
        // 清除定时器
        this.$once("hook:beforeDestroy", () => {
          setTimeout(timer);
        });
      },
    },
  };
</script>

let option = {
  xAxis: {
    type: "value",
  },
  yAxis: {
    type: "category",
  },
};

let horizontalColor = {
  type: "linear",
  x: 1, // 更换
  y: 0,
  x2: 0,
  y2: 0, // 更换
  colorStops: [
    { offset: 0, color: "rgba(234,244,255,1)" },
    { offset: 1, color: "rgba(234,244,255,0.3)" },
  ],
  global: false,
};

let colorList = [
  "#1890ff",
  "#52c41a",
  "#faad14",
  "#f5222d",
  "#1DA57A",
  "#d9d9d9",
];
let series = [
  {
    type: "bar",
    barWidth: 16,
    itemStyle: {
      // 定制显示（按顺序）,实现不同颜色的柱体
      color: (params) => {
        return colorList[params.dataIndex];
      },
    },
    dimensions: ["类型", "销售数量"],
  },
];

let series = [
  {
    // ......
    type: "bar",
    label: {
      // 柱图头部显示值
      show: true,
      position: "right",
      color: "#333",
      fontSize: "12px",
      formatter: (params) => {
        return params.value[params.encode.x[0]];
      },
    },
  },
];

let tooltip = R.merge(tooltip, {
  formatter: function(params) {
    let html = `<div style="height:auto;width:163px;">
          <div style="font-size:14px;font-weight:bold;color:#333;margin-bottom:16px;line-height:1;">
            ${params[0].axisValue}
          </div>
          ${params
            .map(
              (
                item
              ) => `<div style="font-size:12px;color:#808080;margin-bottom:8px;display:flex;align-items:center;line-height:1;">
                <span style="display:inline-block;margin-right:8px;border-radius:6px;width:6px;height:6px;background-color:${
                  item.color
                };"></span>
                ${item.seriesName}
                <span style="flex:1;text-align:right;">${
                  item.value[item.encode.x[0]]
                }</span>
              </div>`
            )
            .join("")}
        </div>`;
    return html;
  },
});

charts.setOption({
  title: {
    text: "销售数量分布",
  },
  dataset: {
    source: [
      ["苹果", 200],
      ["桃子", 180],
      ["葡萄", 340],
      ["香蕉", 250],
      ["芒果", 166],
      ["榴莲", 185],
    ],
  },
  xAxis: R.merge(yAxis, {
    type: "value",
  }),
  yAxis: R.mergeDeepRight(xAxis, {
    type: "category",
    axisPointer: {
      shadowStyle: {
        color: horizontalColor,
      },
    },
  }),
  series,
  tooltip,
});