Unlock the Potential: Empowering Users with Nativescript Firebase Sign

Recently, I embarked on the journey of developing apps using NativeScript and Angular. Looking for a reliable database source, I decided to go with Google Firebase. Successfully migrating my SQL data to the Firebase real-time database, I am now able to seamlessly retrieve data from the JSON table. However, when it comes to the Login and Registration aspect, I wonder if querying username and passwords directly is possible or if I need to utilize Firebase Authentication's email and password feature.

angularfirebaseangular2-nativescript

Answer №1

I am iterating through the values in my Firebase database using the objectKey technique.

uid:fcnb8wD7ZdgqfBYrUVUfW5Z1Azm2
 {
   "zcash_": 1.32569,
   "machine": true,
   "litecoin": 5.3655,
   "decred": 6.25663,
  "btc": 0.2364144
 }

I am retrieving the BTC value. However, it seems to be returning undefined twice before displaying the actual value I need. How can I remove these undefined values?

 firebase.getValue(`/machinelist/${userID}`)
      .then(
        result =>   Object.keys(result).forEach(key => {
var balance= result[key]['btc'];
console.log(balance);
        }
      )
      .catch(error => console.log("Error: " + error));

This is the approach I am using to iterate through my JSON object.

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