这个效果

只显示一个“总计值”

完整代码

export default {
  name: 'hello',
  data () {
    return {
    }
  },
  mounted(){
    this.labelLine();
  },
  methods: {
    /**
     * label只显示总计
     */
    labelLine(){
        let myChart = this.$echarts.init(document.getElementById('myChart'))
        // 绘制图表
        let option = {
            color:['red','blue','green','yellow','#ccc'],
            tooltip: {
                trigger: 'axis',
                axisPointer: {            // 坐标轴指示器，坐标轴触发有效
                    type: 'shadow'        // 默认为直线，可选为：'line' | 'shadow'
                },
                textStyle:{
                align:'left',
                },
            },
            legend: {
                data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎'],
                y:'top',
                x:'center',
                show:true
            },
            grid: {
                left: '3%',
                right: '4%',
                bottom: '3%',
                containLabel: true
            },
            xAxis: {
                type: 'category',
                data: ['周一', '周二', '周三', '周四', '周五', '周六', '周日'],
                splitLine:{show:false},
            grid: {left: '90%',bottom:'35%'},
            },
            yAxis: {
                type: 'value',//category
                splitLine:{show:false}
            },
            series: [
                {
                    name: '直接访问',
                    type: 'bar',
                    stack: '总量',
                    label: {
                        show: true,
                        position: 'insideRight'
                    },
                    data: [320, 302, 301, 334, 390, 330, 320]
                },
                {
                    name: '邮件营销',
                    type: 'bar',
                    stack: '总量',
                    label: {
                        show: true,
                        position: 'insideRight'
                    },
                    data: [120, 132, 101, 134, 90, 230, 210]
                },
                {
                    name: '联盟广告',
                    type: 'bar',
                    stack: '总量',
                    label: {
                        show: true,
                        position: 'insideRight'
                    },
                    data: [220, 182, 191, 234, 290, 330, 310]
                },
                {
                    name: '视频广告',
                    type: 'bar',
                    stack: '总量',
                    label: {
                        show: true,
                        position: 'insideRight'
                    },
                    data: [150, 212, 201, 154, 190, 330, 410]
                },
                {
                    name: '搜索引擎',
                    type: 'bar',
                    stack: '总量',
                    label: {
                        show: true,
                        position: 'insideRight'
                    },
                    data: [820, 832, 901, 934, 1290, 1330, 1320]
                }
            ]
        }
        //将最后一类的label用formatter函数处理为总和。
        let series = option["series"];
        let showTotalNumber = function(params) {
            let datavalue = 0;
            for (let i = 0; i < series.length; i++) {
                datavalue += series[i].data[params.dataIndex]
            }
            return datavalue;
        }
        if(series[series.length - 1]){
          series[series.length - 1]["label"]["formatter"] = showTotalNumber ;  
        }
        myChart.setOption(option);
        /**
         *图例显示隐藏时求和改变，没开启的可以忽略下面代码
         */
        myChart.on("legendselectchanged", function(obj) {  // 监听图例发生改变
            let b = obj.selected,
            d = [];
            for (let  key in b) {
                if (b[key]) {
                    for (let i = 0, l = series.length; i < l; i++) {
                        let changename = series[i]["name"];
                        if (changename == key) {
                            d.push(i);
                        }
                    }
                }
            }
            let fun = function(params) {
            let datavalue = 0;
            for (let i = 0; i < d.length; i++) {
                for (let j = 0; j < series.length; j++) {
                    if (d[i] == j) {
                        datavalue += series[j].data[params.dataIndex]
                    }
                }
            }
            return datavalue
        }
        for (let i = 0; i < series.length; i++) {
            series[i]["label"]["show"] = false;
        }
        for (let i = series.length - 1; i >= 0; i--) {
            let name = series[i]["name"];
            if (obj["selected"][name]) {
                series[i]["label"]["formatter"] = fun
                series[i]["label"]["show"] = true
                break;
            }
        }
        myChart.setOption(option);
    })
    }
  }
}