Firebase update callback to detect error and sucssess

Question

How do I make this call back work? I have read the documents but I just cant figure it out for some reason?

   var ref = new Firebase(\"https://xxx.firebasei         


        

Answer 1

In React ES6 :

var refTypes = db.ref("products").child(productId);

var updates = {};
updates[productId] = newProduct;

refTypes.update(updates).then(()=>{
  console.log("Data saved successfully.");
}).catch((error)=> {
  console.log("Data could not be saved." + error);
});