柱状图末尾添加合计数据echarts 柱状配置项内容和展示

      app.title = '堆叠条形图';

option = {
    tooltip: {
        trigger: 'axis',
        axisPointer: { 
            type: 'shadow' 
        }
    },
    legend: {
        data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎']
    },
    grid: {
        left: '3%',
        right: '4%',
        bottom: '3%',
        containLabel: true
    },
    xAxis: {
        type: 'value'
    },
    yAxis: {
        type: 'category',
        data: ['周一', '周二', '周三', '周四', '周五', '周六', '周日']
    },
    series: [{
            name: '直接访问',
            type: 'bar',
            stack: '总量',
            label: {
                normal: {
                    show: true,
                    position: 'insideRight'
                }
            },
            z: 10,
            data: [320, 302, 301, 334, 390, 330, 320]
        },
        {
            name: '邮件营销',
            type: 'bar',
            stack: '总量',
            label: {
                normal: {
                    show: true,
                    position: 'insideRight'
                }
            },
            z: 10,
            data: [120, 132, 101, 134, 90, 230, 210]
        },
        {
            name: '联盟广告',
            type: 'bar',
            stack: '总量',
            label: {
                normal: {
                    show: true,
                    position: 'insideRight'
                }
            },
            z: 10,
            data: [220, 182, 191, 234, 290, 330, 310]
        },
        {
            name: '视频广告',
            type: 'bar',
            stack: '总量',
            label: {
                normal: {
                    show: true,
                    position: 'insideRight'
                }
            },
            z: 10,
            data: [150, 212, 201, 154, 190, 330, 410]
        },
        {
            name: '搜索引擎',
            type: 'bar',
            stack: '总量',
            z: 10,
            label: {
                normal: {
                    show: true,
                    position: 'insideRight'
                }
            },
            data: [820, 832, 901, 934, 1290, 1330, 1320]
        }
    ]
};
// 求出每天的和
function sum(num) {
    let E = 0;
    option.series.forEach(item => {
        E += item.data[num]
    });
    return E;
};
option.series.push({
    name: '总量',
    type: 'bar',
    stack: '搜索引擎',
    barGap: '-100%', // 将总计与其他数据重合
    label: {
        normal: {
            show: true,
             position: ['101%', '40%'], // 总计数据的位置,
            textStyle: {
                color: '#000' //总计数据的颜色
            },
        },
    },
    itemStyle: {
        color:'#cccccc', // 颜色自己设
    },
    data: [sum(0), sum(1), sum(2), sum(3), sum(4), sum(5), sum(6)]
})
myChart.setOption(option);