echarts 折线图 区域渐变色

代码

<template>
  <div class="echarts1" ref="echarts">

  </div>
</template>

<script>

import moment from "moment";
import {FontChart} from "@/utils/utils";

export default {
  name: 'echarts1',
  components: {},
  props: {
    list: {
      type: Array,
      default() {
        return []
      }
    }
  },
  data() {
    return {}
  },
  watch: {
    list() {
      this.drawLine()
    },
  },
  mounted() {
    this.drawLine()
  },
  methods: {
    drawLine() {
      var that = this
      window.addEventListener('resize', this.drawLine)
      let myChart = this.$echarts.init(this.$refs.echarts)
      var list = this.list
      var xdata = ['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月', '10月', '11月', '12月']
      var ydata = [10, 10, 10, 10, 10, 10, 50, 20, 10, 30, 20, 8]
      list.forEach((type, index) => {
        xdata.forEach((type2, index2) => {
          if (xdata[index2] === moment(type.time).format("M月")) {
            ydata[index2] = type.num
          }
        });
      });
      var option = {
        tooltip: {
          trigger: 'axis',
          axisPointer: { // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        grid: {
          top: '15%',
          left: '40',
          right: '30',
          bottom: '15%'
        },
        xAxis: [{
          type: 'category',
          boundaryGap: false,
          axisLine: {
            show: true,
            lineStyle: {
              color: 'rgba(32, 72, 141, 1)'
            },
          },
          axisLabel: {
            show: true,
            interval: 0,
            textStyle: {
              color: 'rgba(190, 198, 218, 1)',
              margin: 0,
              fontSize: FontChart(13),
            },
          },
          axisTick: {
            show: false,
          },
          data: xdata
        }],
        yAxis: [{
          splitNumber: 4,
          minInterval: 1,
          splitLine: {
            show: true,
            lineStyle: {
              color: 'rgba(21, 58, 121, 0.6)',
              type: 'dashed'
            },
          },
          axisLine: {
            show: true,
            lineStyle: {
              color: 'rgba(32, 72, 141, 1)'
            }
          },
          axisLabel: {
            show: true,
            textStyle: {
              color: 'rgba(190, 198, 218, 1)',
              fontSize: FontChart(13),
            }
          },
          axisTick: {
            show: false,
          },
        }],
        series: [{
          name: '确认违规趋势',
          type: 'line',
          symbol: 'circle', // 默认是空心圆（中间是白色的），改成实心圆
          showAllSymbol: true,
          symbolSize: 3,
          lineStyle: {
            normal: {
              color: 'rgba(13, 250, 238, 1)', // 线条颜色
            },
          },
          itemStyle: {
            color: 'rgba(13, 250, 238, 1)',
            borderColor: 'rgba(13, 250, 238, 1)',
            borderWidth: 2
          },
          label: {
            normal: {
              show: false,
              position: 'top',
              rich: {
                a: {
                  color: '#fff',
                  align: 'center',
                },
              }
            }
          },
          tooltip: {
            show: true
          },
          areaStyle: {
            normal: {
              color: new this.$echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                offset: 0,
                color: 'rgba(13, 250, 238, 0.3)'
              },
                {
                  offset: 1,
                  color: 'rgba(0, 156, 255, 0)'
                }
              ], false),
            }
          },
          data: ydata
        }]
      }
      myChart.clear()
      myChart.resize()
      myChart.setOption(option)
    },
  }
}
</script>

<style lang="scss" scoped>
.echarts1 {
  position: relative;
  width: 100%;
  height: calc(100% - 10px);
}
</style>

实例汇总

echarts折线图实例汇总