xiangan_pc/src/components/echarts/line.vue

<template>
  <div>
    <div :id="idName" ref="linesRef" :style="{ height: height, width: width }" />
  </div>
</template>
<script>
import moment from 'moment' // 导入模块
export default {
  props: {
    idName: { type: String, default: 'chart' },
    width: { type: String, default: '100%' },
    height: { type: String, default: '200px' },
    chartData: { type: Array, default: () => [] },
    desc: { type: String, default: '' }
  },
  data() {
    return {
      date: [],
      typeList: {
        OD: [],
        OS: [],
        typeNull: []
      },
      legendData: [],
      seriesData: [],
      disabled: false

    }
  },
  watch: {
    chartData: {
      handler(val, olVal) {
        this.initFun()
      },
      deep: true
    }
  },
  mounted() {
    this.initFun()
  },
  methods: {
    initFun() {
      if (this.chartData && this.chartData.length > 0) {
        this.disabled = false
        this.chartData.forEach(item => {
          this.date.push(moment(item.date).format('l'))
          if (item.type === 'OD') {
            this.typeList.OD.push([item.date, item.value])
            this.legendData[0] = 'OD'
          }
          if (item.type === 'OS') {
            this.typeList.OS.push([item.date, item.value])
            this.legendData[1] = 'OS'
          }
          if (item.type === null) {
            this.typeList.typeNull.push([item.date, item.value])
            this.legendData = []
          }
        })
      } else {
        this.disabled = true
      }
      this.$nextTick(() => {
        this.visionFun()
      })
    },
    visionFun() {
      // 基于准备好的dom，初始化echarts实例
      const echartsLine = this.$echarts.init(document.getElementById(this.idName))
      const colors = ['#4462FF', '#0DB760', '#000000']
      this.seriesData = []
      Object.keys(this.typeList).forEach((item, index) => {
        if (this.typeList[item].length > 0) {
          this.seriesData.push({
            name: item,
            type: 'line',
            data: this.typeList[item],
            smooth: true,
            itemStyle: {
              color: colors[index]
            },
            symbolSize: 10
          })
        }
      })

      // 基于准备好的dom，初始化echarts实例
      echartsLine.setOption({
        title: {
          text: this.desc,
          textStyle: {
            'color': '#fff'
          },
          left: 10
        },
        tooltip: {
          trigger: 'axis',
          backgroundColor: 'rgba(255,255,255,0.8)',
          textStyle: {
            color: 'black' // 设置文字颜色
          },
          formatter(params) {
            const thisDate = moment(params[0].axisValue).format('YYYY/M/D')
            let result = `${thisDate} <br/>`
            params.forEach(item => {
              if (item.data.length) {
                item.seriesName = item.seriesName === 'typeNull' ? '' : item.seriesName
                result += `${item.marker}${item.seriesName}: ${item.data[1]}<br/>`
              } else {
                result += `${item.marker}${item.seriesName}: - <br/>`
              }
            })
            return result
          }
        },
        legend: {
          data: this.legendData,
          icon: 'pin',
          textStyle: {
            color: '#ffffff'
          },
          right: 30
        },
        dataZoom: [
          {
            type: 'inside',
            disabled: this.disabled,
            realtime: true,
            start: 0,
            end: 100
          }
        ],
        grid: {
          top: 45,
          left: 50,
          right: 50,
          bottom: 30,
          containLabel: false
        },
        xAxis: {
          type: 'time',
          boundaryGap: false,
          axisLabel: {
            show: true,
            textStyle: {
              color: '#ffffff'
            },
            formatter: function(value, index) {
              const showD = moment(value).format('YYYY/M/D')
              return showD
            }
          },
          // 显示网格线
          splitLine: {
            show: true
          }
        },

        yAxis: {
          type: 'value',
          axisLabel: {
            show: true,
            textStyle: {
              color: '#ffffff'
            }
          },
          axisLine: {
            lineStyle: {
              color: '#ffffff'
            }
          }
        },
        series: this.seriesData
      })
      // 随窗口变化
      window.addEventListener('resize', () => { echartsLine.resize() })
      //  随外层div的大小变化自适应
      this.$erd.listenTo(this.$refs.linesRef, () => {
        this.$nextTick(() => {
          echartsLine.resize()
        })
      })
    }
  }
}

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