Echarts 设置柱状图固定背景

option = {
  yAxis: {
    type: 'category',
    data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
  },
  xAxis: {
    type: 'value'
  },
  series: [
    {
      data: [120, 200, 150, 80, 70, 110, 130],
      type: 'bar',
      itemStyle:{
        borderRadius:20,
      },
      showBackground: true,
      backgroundStyle: {
        color: 'red',
        borderRadius:20,
      }
    }
  ]
};

查看效果