jtjsc-front/src/views/liaowangtai/LineChart2.vue

<template>
  <div ref="chart" style="width: 350px; height: 200px;"></div>
</template>

<script>
import * as echarts from 'echarts';

export default {
  name: 'SalesChart',
  data() {
    return {
      chart: null,
    };
  },
  mounted() {
    this.initChart();
  },
  methods: {
    initChart() {
      // 基于准备好的dom，初始化echarts实例
      this.chart = echarts.init(this.$refs.chart);

      // 指定图表的配置项和数据
      const option = {
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            crossStyle: {
              color: '#999'
            }
          }
        },
        toolbox: {
          feature: {
            dataView: { show: true, readOnly: false },
            magicType: { show: true, type: ['line', 'bar'] },
            restore: { show: true },
            saveAsImage: { show: true }
          }
        },
        legend: {
          data: ['Evaporation', 'Temperature']
        },
        xAxis: [
          {
            type: 'category',
            data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
            axisPointer: {
              type: 'shadow'
            }
          }
        ],
        yAxis: [
          {
            type: 'value',
            name: 'Precipitation',
            min: 0,
            max: 250,
            interval: 50,
            axisLabel: {
              formatter: '{value} ml'
            }
          },
          {
            type: 'value',
            name: 'Temperature',
            min: 0,
            max: 25,
            interval: 5,
            axisLabel: {
              formatter: '{value} °C'
            }
          }
        ],
        series: [
          {
            name: 'Evaporation',
            type: 'bar',
            tooltip: {
              valueFormatter: function (value) {
                return value + ' ml';
              }
            },
            data: [
              2.0, 4.9, 7.0, 23.2, 25.6, 76.7, 135.6, 162.2, 32.6, 20.0, 6.4, 3.3
            ]
          },
          // {
          //   name: 'Precipitation',
          //   type: 'bar',
          //   tooltip: {
          //     valueFormatter: function (value) {
          //       return value + ' ml';
          //     }
          //   },
          //   data: [
          //     2.6, 5.9, 9.0, 26.4, 28.7, 70.7, 175.6, 182.2, 48.7, 18.8, 6.0, 2.3
          //   ]
          // },
          {
            name: 'Temperature',
            type: 'line',
            yAxisIndex: 1,
            tooltip: {
              valueFormatter: function (value) {
                return value + ' °C';
              }
            },
            data: [2.0, 2.2, 3.3, 4.5, 6.3, 10.2, 20.3, 23.4, 23.0, 16.5, 12.0, 6.2]
          }
        ]
      };


      // 使用刚指定的配置项和数据显示图表。
      this.chart.setOption(option);
    },
  },
  beforeDestroy() {
    if (this.chart) {
      // 销毁图表实例
      this.chart.dispose();
    }
  },
};
</script>

<style scoped>
/* 根据需要添加样式 */
</style>