php - How to retrieve parent category when using grouped categories in Highcharts? -

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i using grouped categories library here https://github.com/blacklabel/grouped_categories. how retrieve parent category? example, how get/return category "fruit" graph here: http://blacklabel.github.io/grouped_categories/. have tried this.x returns both parent , subcategories of point. this.category.name return subcategory, or "apple" in example.

you got it. talking tooltip, can reach parent category name this.x.parent.name. looks can parent level way;

try it: jsfiddle


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