highcharts 动态刷新图标多个曲线

Highcharts.setOptions({
                global: {
                    useUTC: false
                }
            });
            function activeLastPointToolip(chart) {
                var points = chart.series[0].points;
                chart.tooltip.refresh(points[points.length -1]);
            }
            var chart = Highcharts.chart('container_change', {
                chart: {
                    type: 'spline',
                    marginRight: 10,
                    events: {
                        load: function () {
                            var series = this.series[0],
                                chart = this;
                            var series2 = this.series[1],
                                chart2 = this;
                            activeLastPointToolip(chart);
                            setInterval(function () {
                                var x = (new Date()).getTime(), // 当前时间
                                    y = Math.random(),
                                    z = Math.random()*3;  // 随机值
                                series.addPoint([x, y], true, true);
                                activeLastPointToolip(chart);
                                series2.addPoint([x, z], true, true);
                                activeLastPointToolip(chart2);
                            }, 1000);
                        }
                    }
                },
                title: {
                    text: '温度时间曲线变化图'
                },
                xAxis: {
                    type: 'datetime',
                    tickPixelInterval: 150
                },
                yAxis: {
                    title: {
                        text: null
                    }
                },
                tooltip: {
                    formatter: function () {
                        return '' + this.series.name + '
' +
                            Highcharts.dateFormat('%Y-%m-%d %H:%M:%S', this.x) + '
' +
                            Highcharts.numberFormat(this.y, 2);
                    }
                },
                legend: {
                    enabled: false
                },
                series: [{
                    name: '随机数据',
                    data: (function () {
                        // 生成随机值
                        var data = [],
                            time = (new Date()).getTime(),
                            i;
                        for (i = -19; i <= 0; i += 1) {
                            data.push({
                                x: time + i * 1000,
                                y: Math.random()
                            });
                        }
                        return data;
                    }())
                },
                    {
                        name: '随机数据2',
                        data: (function () {
                            $.getJSON('/myadmin/condition/room/high_data/{{ room.id }}/', function (response) {
                                if (response.code !== 200) {
                                    alert('读取数据失败！');
                                    return false;
                                }
                                var data_ = response.data;
                                return data_.data3
                            });
                        }())
                    }]
            });