使用columns with drilldown的Highcharts的默认示例，我试图在向下钻取时点击该类别。
例如，点击＆＃34; Chrome＆＃34;列，应提醒＆＃34; Chrome＆＃34;
我在点击时添加了一个事件，但是在向下钻取时，我收到一个空值，在向上钻取时，我会收到类别索引。
我错过了什么？我的示例可用here
$(function () {
// Create the chart
$('#container').highcharts({
chart: {
type: 'column'
},
title: {
text: 'Browser market shares. January, 2015 to May, 2015'
},
subtitle: {
text: 'Click the columns to view versions. Source: <a href="http://netmarketshare.com">netmarketshare.com</a>.'
},
xAxis: {
type: 'category'
},
yAxis: {
title: {
text: 'Total percent market share'
}
},
legend: {
enabled: false
},
plotOptions: {
series: {
borderWidth: 0,
dataLabels: {
enabled: true,
format: '{point.y:.1f}%'
},
point: {
events: {
click: function(event) {
alert(this.category);
}
}
}
}
},
tooltip: {
headerFormat: '<span style="font-size:11px">{series.name}</span><br>',
pointFormat: '<span style="color:{point.color}">{point.name}</span>: <b>{point.y:.2f}%</b> of total<br/>'
},
series: [{
name: 'Brands',
colorByPoint: true,
data: [{
name: 'Microsoft Internet Explorer',
y: 56.33,
drilldown: 'Microsoft Internet Explorer'
}, {
name: 'Chrome',
y: 24.03,
drilldown: 'Chrome'
}, {
name: 'Firefox',
y: 10.38,
drilldown: 'Firefox'
}, {
name: 'Safari',
y: 4.77,
drilldown: 'Safari'
}, {
name: 'Opera',
y: 0.91,
drilldown: 'Opera'
}, {
name: 'Proprietary or Undetectable',
y: 0.2,
drilldown: null
}]
}],
drilldown: {
series: [{
name: 'Microsoft Internet Explorer',
id: 'Microsoft Internet Explorer',
data: [
[
'v11.0',
24.13
],
[
'v8.0',
17.2
],
[
'v9.0',
8.11
],
[
'v10.0',
5.33
],
[
'v6.0',
1.06
],
[
'v7.0',
0.5
]
]
}, {
name: 'Chrome',
id: 'Chrome',
data: [
[
'v40.0',
5
],
[
'v41.0',
4.32
],
[
'v42.0',
3.68
],
[
'v39.0',
2.96
],
[
'v36.0',
2.53
],
[
'v43.0',
1.45
],
[
'v31.0',
1.24
],
[
'v35.0',
0.85
],
[
'v38.0',
0.6
],
[
'v32.0',
0.55
],
[
'v37.0',
0.38
],
[
'v33.0',
0.19
],
[
'v34.0',
0.14
],
[
'v30.0',
0.14
]
]
}, {
name: 'Firefox',
id: 'Firefox',
data: [
[
'v35',
2.76
],
[
'v36',
2.32
],
[
'v37',
2.31
],
[
'v34',
1.27
],
[
'v38',
1.02
],
[
'v31',
0.33
],
[
'v33',
0.22
],
[
'v32',
0.15
]
]
}, {
name: 'Safari',
id: 'Safari',
data: [
[
'v8.0',
2.56
],
[
'v7.1',
0.77
],
[
'v5.1',
0.42
],
[
'v5.0',
0.3
],
[
'v6.1',
0.29
],
[
'v7.0',
0.26
],
[
'v6.2',
0.17
]
]
}, {
name: 'Opera',
id: 'Opera',
data: [
[
'v12.x',
0.34
],
[
'v28',
0.24
],
[
'v27',
0.17
],
[
'v29',
0.16
]
]
}]
}
});
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/data.js"></script>
<script src="https://code.highcharts.com/modules/drilldown.js"></script>
<div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>
提前致谢
答案 0 :(得分：2)
您可以将行动移至chart.events.drilldown，如下所示：
chart: {
type: 'column',
events: {
drilldown: function(e) {
alert(e.seriesOptions.name);
}
}
},
这可以用于点击点或xAxis类别标签。