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![?](http://img1.sycdn.imooc.com/54584f8f00019fc002200220-100-100.jpg)
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您可以使用tooltip.formatter保存在点对象中的附加属性来实现它。检查下面发布的演示和代码。
代码:
tooltip: {
formatter: function() {
if (this.point.tooltipInfo) {
return 'Something: <br>- ' + this.point.tooltipInfo.join('<br>- ');
}
return this.y;
}
},
drilldown: {
series: [{
name: "Category 1",
id: "cat1",
data: [{
name: "stuff 1",
y: 4,
tooltipInfo: ['aaa', 'bbb', 'ccc', 'ddd']
},
{
name: "stuff 2",
y: 6,
tooltipInfo: ['aaa', 'bbb', 'ccc', 'ddd', 'eee', 'fff']
},
[
"stuff 3",
5
],
[
"stuff 4",
6
]
]
}]
}
演示:
http://jsfiddle.net/BlackLabel/vjoprc7t/
API参考:
https://api.highcharts.com/highcharts/tooltip.formatter
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