堆叠区域图（tooltip 显示自己所需的值）echarts category配置项内容和展示

tooltip返回总数

      option = {
    title: {
        text: '堆叠区域图'
    },
    tooltip: {
        trigger: 'axis',
        formatter: function(params) {
            console.info(params);
            var res = params[0].name + '<br/>';
            var total = 0;
            $.each(params, function(i, value) {
                total += params[i].value;
                res += value.seriesName + ':' + value.value + '<br/>'
            })
            return res + '总数：' + total;
        }
    },
    legend: {
        data: ['邮件营销', '联盟广告', '视频广告', '直接访问', '搜索引擎']
    },
    toolbox: {
        feature: {
            saveAsImage: {}
        }
    },
    grid: {
        left: '3%',
        right: '4%',
        bottom: '3%',
        containLabel: true
    },
    xAxis: [{
        type: 'category',
        boundaryGap: false,
        data: ['周一', '周二', '周三', '周四', '周五', '周六', '周日']
    }],
    yAxis: [{
        type: 'value'
    }],
    series: [{
        name: '邮件营销',
        type: 'line',
        stack: '总量',
        areaStyle: {
            normal: {}
        },
        data: [120, 132, 101, 134, 90, 230, 210]
    }, {
        name: '联盟广告',
        type: 'line',
        stack: '总量',
        areaStyle: {
            normal: {}
        },
        data: [220, 182, 191, 234, 290, 330, 310]
    }, {
        name: '视频广告',
        type: 'line',
        stack: '总量',
        areaStyle: {
            normal: {}
        },
        data: [150, 232, 201, 154, 190, 330, 410]
    }, {
        name: '直接访问',
        type: 'line',
        stack: '总量',
        areaStyle: {
            normal: {}
        },
        data: [320, 332, 301, 334, 390, 330, 320]
    }, {
        name: '搜索引擎',
        type: 'line',
        stack: '总量',
        label: {
            normal: {
                show: true,
                position: 'top'
            }
        },
        areaStyle: {
            normal: {}
        },
        data: [820, 932, 901, 934, 1290, 1330, 1320]
    }]
};