柱状图-渐变色-竖双柱状图

效果图：

  chart.setOption({
    tooltip: {
      trigger: 'axis',
      show: true,
      backgroundColor: 'rgba(6,19,40,0.8)',
      borderColor: 'transparent',
      padding: [8, 20, 8, 8],
      textStyle: {
        color: '#fff',
        opacity: 1,
        fontSize: 15,
      },
      axisPointer: {
        type: 'line'
      }
    },
    grid: {
      left: '11%',
      top: '14%',
      width: '86%',
      height: '75%',
    },
    legend: {
      show: true,
      top: "2%",
      right: "0%",
      itemGap: 10,
      icon: "rect",
      itemWidth: 10,
      itemHeight: 10,
      textStyle: {
        fontSize: 14,
        fontFamily: "Source Han Sans CN",
        fontWeight: "normal",
        color: "#FFFFFF",
        opacity: 0.8,
      },
    },
    xAxis: {
      type: 'category',
      data: ["6/1", "6/2", "6/3", "6/4", "6/5", "6/6"],
      boundaryGap: true,
      splitLine: {
        lineStyle: {
          type: 'solid',
        },
        alignWithLabel: true,
      },
      axisLine: {
        lineStyle: {
          type: 'solid',
          color: '#BAE7FF'
        },
      },
      axisTick: {
        show: true,
        lineStyle: {
          type: 'solid',
          color: '#BAE7FF'
        },
      },
      axisLabel: {
        fontSize: 16,
        fontFamily: 'Source Han Sans CN',
        fontWeight: 400,
        lineHeight: 30,
        color: '#cccccc',
        margin: 3
      },
    },
    yAxis: {
      name: '单位: 人',
      type: 'value',
      splitLine: {
        lineStyle: {
          type: 'dashed',
          color: 'rgba(105, 119, 135, 0.6)'
        }
      },
      axisLine: {
        show: true,
        lineStyle: {
          type: 'solid',
          color: '#BAE7FF'
        },

      },
      axisTick: {
        show: false
      },
      axisLabel: {
        fontSize: 16,
        fontFamily: 'Source Han Sans CN',
        fontWeight: 400,
        color: '#cccccc',
        margin: 5
      },
      nameGap: 0,
      nameTextStyle: {
        fontSize: 16,
        fontFamily: 'Source Han Sans CN',
        fontWeight: 400,
        lineHeight: 50,
        color: '#cccccc'
      }
    },
    series: [{
      name: "已出勤",
      type: 'bar',
      animationDuration: 1000,
      animationEasing: "cubicInOut",
      barWidth: 11,
      data: [900, 390, 520, 610, 700, 660],
      itemStyle: {
        color: {
          type: 'linear',
          x: 0,
          y: 0,
          x2: 0,
          y2: 1,
          colorStops: [{
            offset: 0,
            color: '#D0E71E' // 0% 处的颜色
          }, {
            offset: 1,
            color: 'rgba(30,231,231,0.35)' // 100% 处的颜色
          }],
          global: false // 缺省为 false
        }
      },
    },
    {
      name: "未出勤",
      type: 'bar',
      barGap: '50%',
      animationDuration: 1000,
      animationEasing: "cubicInOut",
      barWidth: 11,
      data: [500, 190, 210, 310, 370, 400],
      itemStyle: {
        color: {
          type: 'linear',
          x: 0,
          y: 0,
          x2: 0,
          y2: 1,
          colorStops: [{
            offset: 0,
            color: 'rgba(178,178,178,1) ' // 0% 处的颜色
          }, {
            offset: 1,
            color: 'rgba(178,178,178,0.22) ' // 100% 处的颜色
          }],
          global: false // 缺省为 false
        }
      }
    }
    ]
  })