【echarts】19、echarts+vue2 - 折线图柱状图

前言

基于echarts5.x和vue2实现
记录以便日后查阅
1
2

实现效果

代码实现

<template>
  <div class="chart-wrap">
    <ul class="legend-list">
      <li
        v-for="(item, index) in yData"
        :key="index"
        :class="['legend', item.selected ? '': 'un-active']"
        @mouseenter="enterHandler(item)"
        @mouseleave="leaveHandler(item)"
        @click="clickHandler(item)"
      >
        <i v-if="item.name !== '噪声'" class="rect" :style="{ backgroundColor: item.color }" />
        <i v-else class="line" :style="{ backgroundColor: item.color }" />
        <span>{{ item.name }}span>
      li>
    ul>
    <div id="chart16" class="chart" />
  div>
template>

<script>
export default {
  name: 'Index',
  data () {
    return {
      chart: null,
      yData: [
        { name: 'PM2.5', value: [58, 29, 50, 26, 41, 44, 27, 44, 32, 32, 29, 45, 32, 28, 50, 25, 37, 22, 25, 56, 40, 32, 40, 24, 54], color: '#F7B500', selected: true },
        { name: 'PM10', value: [64, 63, 68, 62, 55, 61, 70, 71, 60, 78, 73, 63, 82, 59, 81, 82, 55, 81, 88, 64, 66, 50, 61, 76, 70], color: '#06C88C', selected: true },
        { name: '噪声', value: [30, 38, 30, 33, 54, 49, 54, 57, 33, 52, 59, 44, 47, 31, 40, 55, 53, 48, 46, 52, 53, 41, 55, 33, 46], color: '#0091FF', selected: true }
      ],
      xData: ['01:00', '02:00', '03:00', '04:00', '05:00', '06:00', '07:00', '08:00', '09:00', '10:00', '11:00', '12:00', '13:00', '14:00', '15:00', '16:00', '17:00', '18:00', '19:00', '20:00', '21:00', '22:00', '23:00']
    }
  },
  mounted() {
    this.createChartHandler()
  },
  methods: {
    // 创建图表
    createChartHandler () {
      this.chart = this.$echarts.init(document.getElementById('chart16'))
      this.chart.setOption(this.getChartOption(this.yData, this.xData))
      window.addEventListener('resize', () => {
        setTimeout(() => {
          this.chart.resize()
        })
      })
    },
    // 获取图表配置项
    getChartOption (yData, xData) {
      return {
        color: yData.map(i => i.color),
        tooltip: {
          trigger: 'axis',
          extraCssText:
            'color:#fff;background: rgba(0, 38, 118, 0.5);border:none; box-shadow: 0px 0px 8px 1px rgba(0, 145, 255, 0.5);border-radius: 2px;z-index:99',
          axisPointer: {
            type: 'cross'
          },
          formatter: function (params) {
            const axisLabel = params[0].axisValueLabel
            return `${axisLabel}

        ${params[0].color};margin-right:15px">${params[0].seriesName}：${params[0].value}

        ${params[1].color};margin-right:15px">${params[1].seriesName}：${params[1].value}%

        ${params[2].color};margin-right:15px">${params[2].seriesName}：${params[2].value}%`
          },
        },
        grid: {
          top: '5%',
          left: '10%',
          right: '15%',
          bottom: '10%',
          containLabel: false
        },
        legend: {
          show: false,
          data: yData.map(i => i.name)
        },
        xAxis: [
          {
            type: 'category',
            axisTick: {
              alignWithLabel: true
            },
            axisLabel: {
              textStyle: {
                fontSize: 12,
                color: '#fff'
              }
            },
            data: xData
          }
        ],
        yAxis: [
          {
            type: 'value',
            min: 0,
            max: 200,
            interval: 40,
            position: 'right',
            axisLine: {
              lineStyle: {
                color: yData[0].color
              }
            },
            axisLabel: {
              textStyle: {
                fontSize: 10,
                color: '#fff'
              },
              formatter: '{value} μg/m³'
            }
          },
          {
            show: false,
            type: 'value',
            name: 'PM10',
            min: 0,
            max: 200,
            position: 'right',
            offset: 0,
            axisLine: {
              lineStyle: {
                color: yData[1].color
              }
            },
            axisLabel: {
              textStyle: {
                fontSize: 10,
                color: '#fff'
              },
              formatter: '{value} μg/m³'
            }
          },
          {
            type: 'value',
            name: '噪声',
            min: 0,
            max: 100,
            interval: 20,
            position: 'left',
            axisLine: {
              lineStyle: {
                color: yData[2].color
              }
            },
            nameTextStyle: {
              color: '#fff',
              fontSize: 12
            },
            axisLabel: {
              textStyle: {
                fontSize: 10,
                color: '#fff'
              },
              formatter: '{value} dB'
            }
          }
        ],
        series: [
          {
            name: 'PM2.5',
            type: 'bar',
            data: yData[0].value
          },
          {
            name: 'PM10',
            type: 'bar',
            yAxisIndex: 1,
            data: yData[1].value
          },
          {
            name: '噪声',
            type: 'line',
            yAxisIndex: 2,
            data: yData[2].value
          }
        ]
      }
    },
    // 鼠标移入图例触发
    enterHandler (item) {
      if (!this.chart) return
      this.chart.dispatchAction({
        type: 'highlight',
        seriesName: item.name
      })
    },
    // 鼠标移出图例触发
    leaveHandler (item) {
      if (!this.chart) return
      this.chart.dispatchAction({
        type: 'downplay',
        seriesName: item.name
      })
    },
    // 选中切换
    clickHandler (item) {
      if (!this.chart) return
      item.selected = !item.selected
      this.chart.dispatchAction({
        type: 'legendToggleSelect',
        name: item.name
      })
    }
  }
}
script>

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