ChartDynamic.vue

<script setup lang="ts">
import { reactive, ref, onMounted } from 'vue';
import * as echarts from 'echarts';
type EChartsOption = echarts.EChartsOption;
type ECharts = echarts.ECharts;

const colors = ['#9EB23B', '#EF9F9F'];
const dynamicRef = ref<any>(null);
const state = reactive({
  app: {} as any,
  categories: null as any,
  categories2: null as any,
  data: [] as number[],
  data2: [] as number[],
});

onMounted(() => {
  getCategories();
  getCategories2();
  getData();
  getData2();
  getChart();
});

var dynamicChart: ECharts;
function getChart() {
  if (dynamicChart != null && dynamicChart != undefined) {
    dynamicChart.dispose();
  }
  dynamicChart = echarts.init(dynamicRef.value);
  let option: EChartsOption;

  option = {
    color: colors,
    tooltip: {
      trigger: 'axis',
      axisPointer: {
        type: 'cross',
      },
    },
    legend: {},
    dataZoom: {
      show: false,
      start: 0,
      end: 100,
    },
    xAxis: [
      {
        type: 'category',
        boundaryGap: true,
        data: state.categories,
      },
      {
        type: 'category',
        boundaryGap: true,
        data: state.categories2,
      },
    ],
    yAxis: [
      {
        type: 'value',
        scale: true,
        name: '折线图',
        max: 30,
        min: 0,
        boundaryGap: [0.2, 0.2],
        axisLine: {
          show: true,
          lineStyle: {
            color: colors[0],
          },
        },
      },
      {
        type: 'value',
        scale: true,
        name: '柱状图',
        max: 1200,
        min: 0,
        boundaryGap: [0.2, 0.2],
        axisLine: {
          show: true,
          lineStyle: {
            color: colors[1],
          },
        },
      },
    ],
    series: [
      {
        name: '折线图',
        type: 'line',
        data: state.data2,
        itemStyle: {
          color: colors[0],
        },
      },
      {
        name: '柱状图',
        type: 'bar',
        // 使用的 x 轴的 index，在单个图表实例中存在多个 x 轴的时候有用。
        xAxisIndex: 1,
        yAxisIndex: 1,
        data: state.data,
        barWidth: 35,
        itemStyle: {
          borderRadius: 10,
          color: colors[1],
        },
      },
    ],
  };

  state.app.count = 11;

  setInterval(function () {
    let axisData = new Date().toLocaleTimeString().replace(/^\D*/, '');

    state.data.shift();
    state.data.push(Math.round(Math.random() * 1000));
    state.data2.shift();
    state.data2.push(+(Math.random() * 10 + 5).toFixed(1));

    state.categories.shift();
    state.categories.push(axisData);
    state.categories2.shift();
    state.categories2.push(state.app.count++);

    dynamicChart.setOption<EChartsOption>({
      xAxis: [
        {
          data: state.categories,
        },
        {
          data: state.categories2,
        },
      ],
      series: [
        {
          data: state.data2,
        },
        {
          data: state.data,
        },
      ],
    });
  }, 2100);

  option && dynamicChart.setOption(option);
}

function getCategories() {
  let now = new Date();
  let res = <any>[];
  let len = 10;
  while (len--) {
    res.unshift(now.toLocaleTimeString().replace(/^\D*/, ''));
    now = new Date(+now - 2000);
  }
  state.categories = res;
}

function getCategories2() {
  let res = [];
  let len = 10;
  while (len--) {
    res.push(10 - len - 1);
  }
  state.categories2 = res;
}

function getData() {
  let res = [];
  let len = 10;
  while (len--) {
    res.push(Math.round(Math.random() * 1000));
  }
  state.data = res;
}

function getData2() {
  let res = [];
  let len = 0;
  while (len < 10) {
    res.push(+(Math.random() * 10 + 5).toFixed(1));
    len++;
  }
  state.data2 = res;
}
</script>
<template>
  <div class="fit" ref="dynamicRef"></div>
</template>

<style lang="scss" scoped></style>