Accessing Data In Firebase Database

So basically,I have a web application that uses firebase database. and I am having a hard time on how to access the encircled ones? here is my code: function getDataFirebase() {

Solution 1:

Loop over snapshot returned from firebase to get values inside the object.

functiongetDataFirebase() {
    returnnewPromise(function(resolve, reject){
        refReview.on("value", asyncfunction(snap){
            let rootkey = snap.keyconsole.log(rootkey)
            snap.forEach(snapshot => {
                let childKey = snapshot.keyconsole.log(childKey)
                Object.keys(snapshot.val()).map(k => {
                  console.log(snapshot.val()[k])
                })
            })
        })
    })
}

This case falls when we don't know the value of generated timestamps from firebase as child nodes.