Echarts图表跟随父容器的变化自适应

news2024/11/26 14:52:01

如果页面中有多个图表隐藏/展开左边侧边栏echarts图表自适应

	  <div class="line">
        <div class="title">制冷站关键参数</div>
        <div id="chartLine1" style="width: 100%;height:85%;"></div>
      </div>
      <div class="line">
        <div class="title">空压站关键参数</div>
        <div id="chartLine2" style="width: 100%;height:85%;"></div>
      </div>
      <div class="line">
        <div class="title">锅炉和热水房参数</div>
        <div id="chartLine3" style="width: 100%;height:85%;"></div>
      </div>
data() {
  myChart1: '',
  myChart2: '',
  myChart3: '',
},    
//核心代码   new ResizeObserver
mounted() {
    this.$nextTick(() => {
      this.chart1();
      this.chart2();
      this.chart3();
      const resizeOb = new ResizeObserver((entries) => {
        for (const entry of entries) {
          this.$echarts.getInstanceByDom(entry.target).resize();
        }
      });
      // 使用observe开启监听, onObserve可以取消监听
      resizeOb.observe(document.getElementById('chartLine1'));
      resizeOb.observe(document.getElementById('chartLine2'));
      resizeOb.observe(document.getElementById('chartLine3'));
    });
  },
   methods: {
	chart1() {
      // 基于准备好的dom，初始化echarts实例
      this.myChart1 = this.$echarts.init(document.getElementById('chartLine1'));
      // 指定图表的配置项和数据
      const option = {
        tooltip: {
          trigger: 'axis'
        },
        grid: {
          top: '5%',
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: {
          type: 'category',
          boundaryGap: false,
          data: ['04:00', '08:00', '12:00', '16:00', '20:00', '24:00']
        },
        yAxis: {
          type: 'value'
        },
        series: [
          {
            name: '实时cop',
            type: 'line',
            stack: 'Total',
            smooth: true,
            symbol: "none",
            data: [5, 20, 5, 20, 15, 5]
          },
          {
            name: '月度cop',
            type: 'line',
            stack: 'Total',
            smooth: true,
            symbol: "none",
            data: [5, 20, 5, 20, 15, 5]
          },
          {
            name: '年度cop',
            type: 'line',
            stack: 'Total',
            smooth: true,
            symbol: "none",
            data: [5, 20, 5, 20, 15, 5]
          }
        ]
      };

      // 使用刚指定的配置项和数据显示图表。
      this.myChart1.setOption(option);
    },
    //...chart2 ...chart3
}