tree中选中子节点父节点也选中

var a = $("#sys_roleAdd_pid").combotree(‘tree‘).tree(‘getChecked‘,‘indeterminate‘);
var b = $("#sys_roleAdd_pid").combotree(‘tree‘).tree(‘getChecked‘);
a.push.apply(a,b);
console.log(a);

var resourceArrayIds=[];
  for(var i=0;i<a.length;i++){
   resourceArrayIds.push(a[i].id);
  }
  var resourceIds = resourceArrayIds.join(‘,‘);
  alert(resourceIds);