HighCharts中的Ajax请求的2D折线图

设计源码：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>HighCharts 2D带Label的折线图</title>
<script type="text/javascript" src="../scripts/jquery-1.11.0.js"></script>
<script type="text/javascript" src="../scripts/js/highcharts.js"></script>
<script type="text/javascript">
     $(function(){
    	    // 获取CSV数据并且创建图
    	    $.get('data/lineAjax.csv', function (csv) {

    	        $('#lineAjaxChart').highcharts({

    	            data: {
    	                csv: csv
    	            },

    	            title: {
    	                text: '折线'
    	            },
    	            xAxis: {
    	                type: 'datetime',
    	                tickInterval: 7 * 24 * 3600 * 1000, // one week
    	                tickWidth: 0,
    	                gridLineWidth: 1,
    	                labels: {
    	                    align: 'left',
    	                    x: 3,
    	                    y: -3
    	                }
    	            },

    	            yAxis: [{ // 主Y轴
    	                title: {
    	                    text: null
    	                },
    	                labels: {
    	                    align: 'left',
    	                    x: 3,
    	                    y: 16,
    	                    formatter: function() {
    	                        return Highcharts.numberFormat(this.value, 0);
    	                    }
    	                },
    	                showFirstLabel: true
    	            }, { // 次Y轴
    	                linkedTo: 0,
    	                gridLineWidth: 0,
    	                opposite: true,
    	                title: {
    	                    text: null
    	                },
    	                labels: {
    	                    align: 'right',
    	                    x: -3,
    	                    y: 16,
    	                    formatter: function() {
    	                        return Highcharts.numberFormat(this.value, 0);
    	                    }
    	                },
    	                showFirstLabel: false
    	            }],

    	            legend: {
    	                align: 'left',
    	                verticalAlign: 'top',
    	                y: 20,
    	                floating: true,
    	                borderWidth: 0
    	            },

    	            tooltip: {
    	                shared: true,
    	                crosshairs: true
    	            },

    	            plotOptions: {
    	                series: {
    	                    cursor: 'pointer',
    	                    point: {
    	                        events: {
    	                            click: function() {
    	                                hs.htmlExpand(null, {
    	                                    pageOrigin: {
    	                                        x: this.pageX,
    	                                        y: this.pageY
    	                                    },
    	                                    headingText: this.series.name,
    	                                    maincontentText: Highcharts.dateFormat('%A, %b %e, %Y', this.x) +':<br/> '+
    	                                        this.y +' visits',
    	                                    width: 200
    	                                });
    	                            }
    	                        }
    	                    },
    	                    marker: {
    	                        lineWidth: 1
    	                    }
    	                }
    	            },

    	            series: [{
    	                name: 'All visits',
    	                lineWidth: 4,
    	                marker: {
    	                    radius: 4
    	                }
    	            }, {
    	                name: 'New visitors'
    	            }]
    	        });
    	    });
     });
</script>
</head>
<body>
   <div id="lineAjaxChart" style="width: 1200px; height: 500px; margin: 0 auto"></div>
</body>
</html>