$('#tt').tree('getChildren').forEach(x => { var n = $(x.target); if (x.text.match('A')) n.hide(); else n.show();});
var target = this;var finder = $(target).treegrid('options').finder;$(target).treegrid('getChildren').forEach(function(row){ if (row.id==21){ finder.getTr(target,row.id).hide() }})