hasChild

提供子任务的数量

id

string | number

任务的ID

number | undefined

子任务的数量（如果存在子任务），如果没有子任务则返回 "undefined"

Example

const tasks = {
  data:[
     {id:"p_1", text:"Project #1", start_date:"01-04-2013", duration:18, 
     open:true},
     {id:"t_1", text:"Task #1", start_date:"02-04-2013", duration:8,
     parent:"p_1"},
     {id:"t_2", text:"Task #2", start_date:"11-04-2013", duration:8,
     parent:"p_1"}
   ]
};
gantt.init("gantt_here");
gantt.parse(tasks);
 
gantt.hasChild("p_1"); //-> 2 gantt.hasChild("t_1"); //-> undefined

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