使用echarts-for-react 绘制折线图 报错：`series.type should be specified `

解决办法：

在动态获取值的函数前面加 访问器属性  get ，去获取对象的属性

@inject(‘commonStore‘, ‘reportUIStore‘)
@observer
class LineEcharts extends React.Component<Props> {
  drawChart = () => {
    const { nameArr } = this.props
    const option = {
      tooltip: {
        trigger: ‘axis‘,
        axisPointer: {
          lineStyle: {
            color: ‘rgba(24,144,255,0.2)‘,
          },
        },
        formatter: (params: Params) => {
          let tip = ``
          if (params.length) {
            tip += params[0].axisValue + ‘<br/>‘
          }
          if (params.length && params.length === 1) {
            tip +=
              params[0].marker +
              params[0].seriesName +
              ‘ ：‘ +
              params[0].data +
              ‘<br>‘
          }
          if (params.length > 1) {
            let num = params[0].data - params[1].data
            let rate = ((num / params[1].data) * 100).toFixed(2)
            if (num === 0) {
              rate = `0%`
            } else {
              rate = `${rate}%`
            }
            for (let i = 0; i < params.length; i++) {
              if (nameArr && nameArr.length) {
                params[i].seriesName = nameArr[i]
                tip +=
                  params[i].marker +
                  params[i].seriesName +
                  ‘ ：‘ +
                  params[i].data +
                  ‘<br>‘
              }
            }
            tip += `变化：${num}（${rate}）`
          }
          return tip
        },
      },
      grid: {
        left: ‘3%‘,
        right: ‘6%‘,
        bottom: ‘10%‘,
        containLabel: true,
      },
      xAxis: {
        axisLabel: {
          textStyle: {
            color: ‘#999‘,
          },
        },
        type: ‘category‘,
        boundaryGap: true,
        data: range(24).map(hour => `${hour}:00`),
        axisTick: {
          show: false,
        },
        axisLine: {
          show: true,
          lineStyle: {
            color: ‘#ccc‘,
            width: 1,
          },
        },
      },
      yAxis: [
        {
          type: ‘value‘,
          name: ‘‘,
          min: 0,
          max: 12000,
          interval: 3000,
          axisLabel: {
            formatter: ‘{value}‘,
          },
          axisTick: {
            show: false,
          },
          axisLine: {
            show: true,
            lineStyle: {
              color: ‘#ccc‘,
              width: 1,
            },
          },
          splitLine: {
            show: true,
            lineStyle: {
              color: ‘#eee‘,
            },
          },
        },
        {
          type: ‘value‘,
          name: ‘‘,
          min: 0,
          max: 150,
          interval: 50,
          axisLabel: {
            formatter: ‘{value}‘,
          },
          axisTick: {
            show: false,
          },
          axisLine: {
            show: true,
            lineStyle: {
              color: ‘#ccc‘,
              width: 1,
            },
          },
          splitLine: {
            show: true,
            lineStyle: {
              color: ‘#eee‘,
            },
          },
        },
      ],
    series: this.handlData,
    }
    return option
  }

// 注意这儿： 添加了get 错误消失了
 get handlData() {
    let series: Series[] = []
    let { dataArr, nameArr, colors } = this.props
    dataArr.map((itm, i) => {
      let serie = {
        name: nameArr[i],
        type: ‘line‘,
        symbol: ‘circle‘,
        color: colors[i],
        symbolSize: 4,
        itemStyle: {
          normal: {
            lineStyle: {
              width: 2,
              color: colors[i],
            },
          },
        },
        data: dataArr[i],
      }
      series.push(serie)
    })
    return series
  }
  render() {
    return (
      <div>
        <Loading loading={false}>
            <ReactEcharts option={this.drawChart()} />
       </Loading>
      </div>
    )
  }
}

export default LineEcharts

export interface Props {
  reportUIStore?: ReportUIStore
  dataArr: number[][]
  nameArr: string[]
  colors: string[]
}

export interface Params {
  param: ParamsSingle[]
  length: number
}

export interface ParamsSingle {
  seriesName: string
  // 数据名，类目名
  name: string
  // 传入的原始数据项
  data: Object
  // 数据图形的颜色
  color: string
  marker: string
}

export interface Series {
    name: string,
    type: string,
    symbol: string,
    color: string,
    symbolSize: number,
    itemStyle: {
        normal: {
        lineStyle: {
            width: number,
            color: string
        }
        }
    },
    data: number[],
}

原文地址：https://www.cnblogs.com/aloehui/p/9446429.html