【echarts】13、echarts+vue2 - 折线图

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 class="rect" :style="{ backgroundColor: item.color }" />
        <span>{{ item.name }}span>
      li>
    ul>
    <div id="chart10" class="chart" />
  div>
template>

<script>
import echarts from '@/utils/echarts'

export default {
  name: 'Index',
  data () {
    return {
      chart: null,
      yData: [
        { name: '综合能耗', value: [20, 80, 30, 40, 60, 40], color: '#0091FF', selected: true },
        { name: 'GDP能耗', value: [20, 60, 20, 100, 35, 90], color: '#45DE81', selected: true }
      ],
      xData: ['00:05', '00:10', '00:15', '00:20', '00:25', '00:30']
    }
  },
  mounted() {
    this.createChartHandler()
  },
  methods: {
    // 创建图表
    createChartHandler () {
      this.chart = this.$echarts.init(document.getElementById('chart10'))
      this.chart.setOption(this.getChartOption(this.yData, this.xData))
      window.addEventListener('resize', () => {
        setTimeout(() => {
          this.chart.resize()
        })
      })
    },
    // 获取图表配置项
    getChartOption (yData, xData) {
      const hexToRgba = (hex, opacity) => {
        let rgbaColor = ''
        const reg = /^#[\da-f]{6}$/i
        if (reg.test(hex)) {
          rgbaColor = `rgba(${parseInt('0x' + hex.slice(1, 3))},${parseInt(
            '0x' + hex.slice(3, 5)
          )},${parseInt('0x' + hex.slice(5, 7))},${opacity})`
        }
        return rgbaColor
      }
      return {
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'shadow'
          },
          extraCssText:
            'fontFamily: PingFangReg;color:#fff;background:rgba(0,0,0,0.6000);border: unset;border-radius: 2px;z-index:99',
          formatter: (e) => {
            const div = document.createElement('div')
            div.innerHTML = `
          
近期接能
          ${e
              .map((i) => {
                return `
 ${i.color};\"> ${i.seriesName}:${i.value}`
              })
              .join('')}
          `
            return div
          }
        },
        legend: {
          show: false,
          data: yData.map((i) => i.name)
        },
        grid: {
          top: '5%',
          left: '10%',
          right: '5%',
          bottom: '15%'
        },
        xAxis: [
          {
            type: 'category',
            data: xData,
            boundaryGap: false,
            axisLabel: {
              interval: 0,
              fontFamily: 'PingFangReg',
              lineHeight: 17,
              fontSize: 14,
              color: 'rgba(255,255,255,0.6500)'
            },
            axisTick: {
              show: true,
              alignWithLabel: true,
              lineStyle: {
                color: 'rgba(255,255,255,0.1500)'
              }
            },
            axisLine: {
              show: true,
              lineStyle: {
                color: 'rgba(255,255,255,0.1500)'
              }
            }
          }
        ],
        yAxis: [
          {
            type: 'value',
            axisLabel: {
              fontFamily: 'PingFangReg',
              fontSize: 14,
              color: 'rgba(255,255,255,0.6500)'
            },
            axisLine: {
              show: false,
              lineStyle: {
                color: '#24DCF0'
              }
            },
            splitLine: {
              show: true,
              lineStyle: {
                color: ' rgba(255,255,255,0.1500)'
              }
            }
          }
        ],
        series: yData.map((i) => {
          return {
            name: i.name,
            type: 'line',
            symbol: 'none',
            smooth: true,
            data: i.value,
            itemStyle: {
              color: i.color
            },
            lineStyle: {
              shadowColor: i.color, // 透明的颜色
              shadowOffsetX: 0,
              shadowOffsetY: 0,
              opacity: 1, // 透明度
              shadowBlur: 20, // 阴影大小
              type: 'solid', // 实线
              width: 3
            },
            areaStyle: {
              normal: {
                color: new echarts.graphic.LinearGradient(
                  0,
                  0,
                  0,
                  1,
                  [{
                    offset: 0,
                    color: hexToRgba(i.color, 0.3)
                  },
                    {
                      offset: 1,
                      color: hexToRgba(i.color, 0.01)
                    }
                  ],
                  false
                )
              }
            }
          }
        })
      }
    },
    // 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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