CODEWITHSUNDEEP
javascriptnode.jsfirebase
garrettmac
garrettmac

Reputation: 8585

Firebase not behaving as it should in my node.js app

Firebase is acting really funky in my node.js app and I don't know why.

For instance if I have a varible that looks something like this:

var AllItems= {"itemList":[{"id":1,"name":....}

I can log it and have it spit out everything correctly but if I try get it by the inner array, like this.

var itemList = AllItems[itemList]

It returns undefined.

All if I try spit out each one at a time in a loop like this:

for(i in AllItems){
console.log('i: ',i)
}

It spits out something like this:

i:  0
i:  1
i:  2
i:  3

all the way to i: 7581 and I only have 13 Items assuming it is logging there index number but its not and it should be spitting out just that one itemList where the above [{"id":1,"name":.... would be its value.

My firebase modules are

  var Firebase = require("firebase");
   var FirebaseTokenGenerator = require("firebase-token-generator");

Upvotes: 0

Views: 35

Answers (1)

Pierre C.
Pierre C.

Reputation: 1430

I guess your problem is that you do not understand how to access your AllItem object properly.

Access one itemList

In your question you try to access your itemList this way AllItems[itemList]. There, itemList is considered a variable, which is undefined. And AllItems[undefined] is undefined.

Here are the two ways to access it:

var itemList = allItems['itemList'];
var itemList = allItems.itemList;

Loop on itemLists

I do not know how you get to i: 7581 but this is how I did it:

for(var key in allItems) {
  console.log(allItems[key]); 
}

This logs every itemList in allItems.

Snippet

I made a little snippet with everything I just explained. 

var allItems = {
  "itemList": [{
    "id": 1,
    "name": "item1"
  }, {
    "id": 2,
    "name": "item2"
  }, {
    "id": 2,
    "name": "item2"
  }]
};

// Log itemList (2 ways)
console.log(allItems['itemList']);
console.log(allItems.itemList);

var itemList = allItems.itemList;

// Log every item in itemList
itemList.forEach(function (item) {
  console.log(item);
});

// Log every itemList in allItems
for(var key in allItems) {
  console.log(allItems[key]); 
}

Upvotes: 1

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