检索Firestore文档数组

Question

I am trying to retrieve an array of strings from a firestore document. I have tried the following code.

firestore.collection("Category").doc(category).get().then(function(doc) {
    if (doc.exists) {
        subcategory = (doc.data().Subcategories);
        array = subcategory.split(",");
        subcategoryDropdown[subcategoryDropdown.length] = new Option(array);     
    } else {
        alert("No such document!");
    } 
});

But when i run the code, it keeps bringing the array as one string separated by a comma.

I am getting this: "obj1,obj2,obj3" but I'm trying to get it as an array such as ["Obj1","Obj2","Obj3"].

I can't seem to split the array into an array with individual strings. The split command does not seem to work.

Answer 1

The problem, after looking through the console log, was that I was adding the array from the firestore document into another array.

Instead of doing var subcategoryArray = []; use an empty variable ie. var subcategory;