[Extjs6]treepanel内数据的过滤实现

//菜单树过滤
searchTextChanged:function(node,newValue){
//console.log("searchTextChanged");
//console.log(this.lookupReference('treelist'));
alert('searchTextChanged');
var _treeStore = this.lookupReference('treelist').getStore();
var _regExp = new RegExp('.*'+newValue+'.*');
_treeStore.clearFilter();
console.log('record');
console.log(newValue);
var isLeaf = false;
_treeStore.filterBy(function(record,id){
console.log(record);
console.log(record.data.text);
if(record.childNodes.length > 0){
if(_regExp.test(record.data.text)){
isLeaf = true;
}
else{
isLeaf = false;
}
return true;
}else{
if(isLeaf)
return true;
else
return _regExp.test(record.data.text);
}
});
}