I created a class in JavaScript as follows:
class TreeMatching
{
constructor()
{
this.thresholdPoints=0;
this.neighborWeight = 0.4;
this.totalFrequency = 0.0;
this.listSeq = [];
this.listFreq = [];
this.mapScore = new Object();
this.tree = new Trie();
}
createTree()
{
var list_Dictionary;
var loadWordList = $.get("../wordFrequencyTop5000.txt", function(data)
{
list_Dictionary = data.split("\n");
});
loadWordList.done(function()
{
for(var i=0;i<list_Dictionary.length;i++)
{
var string = list_Dictionary[i];
this.tree.insert(string); //<-- Cannot read property 'insert' of undefined
}
});
}
}
which is supposed to call the insert
method in class Trie as follows:
class Trie
{
constructor()
{
this.count=1;
this.root = new TrieNode();
}
insert(word)
{
var children = new Object();
for(var i=0; i<word.length(); i++){
var c = word.charAt(i);
var t;
if(children[c]){
t = children[c];
}else{
t = new TrieNode(c);
children.put(c, t);
}
children = t.children;
//set leaf node
if(i==word.length()-1)
t.isLeaf = true;
}
}
}
However, the line of code where the error is marked, the outer function's this value, is not having properties tree
, mapScore
, etc.
Is there a way that I can access those values from the inner callback function?
Thanks