Echarts在线免费图表

 
            
option =  {
  tooltip: {
    trigger: 'axis',
    axisPointer: {
      type: 'shadow' 
    }
  },
  legend: {},
  grid: {
    left: '3%',
    right: '4%',
    bottom: '3%',
    containLabel: true
  },
  xAxis: {
    type: 'value'
  },
  yAxis: {
    type: 'category',
    data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
  },
  series: [
    {
      name: 'Direct',
      type: 'bar',
      stack: 'total',
      label: {
        show: true
      },
      emphasis: {
        focus: 'series'
      },
      data: [320, 302, 301, 334, 390, 330, 320]
    },
    {
      name: 'Mail Ad',
      type: 'bar',
      stack: 'total',
      label: {
        show: true
      },
      emphasis: {
        focus: 'series'
      },
      data: [120, 132, 101, 134, 90, 230, 210]
    },
    {
      name:"总数",
      type: 'bar',
      barWidth:"0%",
      stack:"total",
      label:{
        show:true,
        color: 'rgb(250, 200, 88)',
        formatter:function(params){
           console.log(params)
          return '2'
        },
        position:"right"
      },
      data:[0,0,0,0,0,0,0]
    }
  ]
};

 const returnRate = function (num, total, len = 2) {
  const numeratorBackup = Number(num)
  const denominatorBackup = Number(total)
  if (denominatorBackup === 0 || numeratorBackup === 0) {
    return 0
  } else {
    const result = numeratorBackup / denominatorBackup
    let val = 0
    const divisor = result.toString().indexOf('.') !== -1 ? result.toString().split('.')[1] : result
    if (numeratorBackup % denominatorBackup === 0 || divisor.length <= len) {
      val = ((numeratorBackup / denominatorBackup) * 100).toFixed(len)
    } else {
      val = ((numeratorBackup / denominatorBackup) * 100).toFixed(len)
    }

    return Number(val)
  }

}
var series = option.series
function getSum (params) {
   let dataValue = 0
   for (let i = 0; i < series.length; i++) {
      dataValue += series[i].data[params.dataIndex]
   }
   return returnRate(dataValue,600) + '%'
}
series[series.length - 1].label.formatter = getSum