Echarts纵坐标显示为整数小数

chart.DoubleDeckBarChart = function (getIDParam, Legend, xAxisData, seriesName1, seriesName2, seriesData1, seriesData2, color1, color2) {

            require.config({paths: {echarts: '/lib/echarts'}});

            require(
                [
                    'echarts',
                    'echarts/chart/bar'
                ],
                function (ec) {
                    var DoubleDeckBar = ec.init(getIDParam);
                    var option = {
                        tooltip: {
                            trigger: 'axis',
                            axisPointer: {            // 坐标轴指示器，坐标轴触发有效
                                type: 'line'        // 默认为直线，可选为：'line' | 'shadow'
                            }
                        },
                        legend: {
                            data: Legend
                        },
                        grid: {
                            x: '40',
                            x2: '20',
                            y2: '50',
                            y: '38'
                        },
                        xAxis: [
                            {
                                type: 'category',
                                data: xAxisData,
                                axisLabel: {
                                    rotate: 40
                                },
                            }
                        ],
                        yAxis: [
                            {
                                type: 'value',
                                axisLabel: {
41                                     formatter: function (v) {
42                                         return parseInt(v)//表示整数。其他数值类型以此类推
43                                     }
44                                 }
45                                   //或者
46                                   //axisLabel: {
47                                     //formatter: function (v) {
48                                        // return v.toFixed(2);   //0表示小数为0位，1表示1位小数，2表示2位小数
49                                     //}
50                                 //},
                            }
                        ],
                        series: [
                            {
                                name: seriesName2,
                                type: 'bar',
                                stack: '广告',
                                data: seriesData2,
                                itemStyle: {
                                    normal: {
                                        color: color2,
                                    },

                                },
                            },
                            {
                                name: seriesName1,
                                type: 'bar',
                                stack: '广告',
                                data: seriesData1,
                                itemStyle: {
                                    normal: {
                                        color: color1,
                                    },

                                },
                            }

                        ]
                    };

                    DoubleDeckBar.setOption(option, true);
                }
            );
        }