jQuery.Highcharts.js绘制柱状图饼状图曲线图

                        }
                    },
                    yAxis: {
                        title: {
                            text: ‘Billions’
                        },
                        labels: {
                            formatter: function() {
                                return this.value / 1000;
                            }
                        }
                    },
                    tooltip: {
                        formatter: function() {
                            return ”+
                                 this.x +’: ‘+ Highcharts.numberFormat(this.y, 0, ‘,’) +’ millions’;
                        }
                    },
                    plotOptions: {