CODEWITHSUNDEEP
javascriptfirebasewebfirebase-realtime-database
sree kumar
sree kumar

Reputation: 44

how to get the push id value in firebase web

Firebase DB screenshot

I want to get the value(111122223333) of the push id in AllocEmp. firebase DB:

{
  "AllocEmp" : {
    "-L3c47chqb35p0Ndo_XB" : "111122223333"
  },
  "complaintDate" : "Wed Jan 10 18:40:34 GMT+05:30 2018",
  "complaintDesc" : "ggshwhwuuww\ngshhsjsn",
  "complaintLM" : "annA",
  "complaintLoc" : "ist",
  "complaintName" : "Continous Fluctuations",
  "defaultTime" : "Thu Jan 11 00:40:34 GMT+05:30 2018",
  "department" : "Electricity",
  "resolvingTime" : "6",
  "uid" : "123456788765"
}

im using the code:

    var fb = 
    firebase.database().ref().child('UserComplaints').child('AllocEmp');
    fb.once('value', snap => {
        alert(snap.val);
    });

this code returns null. please help me

Upvotes: 1

Views: 1234

Answers (3)

Priyanka Arora
Priyanka Arora

Reputation: 457

I faced the similar issue. What happens here is that call backs are run later so console only tells that it is an object. So u can either use wait () and set Timeout . But obviously it is a wrong practice. Enable a function call in the code to make it synch . Hope it helps.

Upvotes: 1

Himanshu
Himanshu

Reputation: 12675

In your code you are using snap.val. Since val is a function not an expression. Use snap.val(). Also remeber it returns an object so try to console it not alert or you can stringify the object to alert.Like this :-

let values = []
var fb = 
firebase.database().ref().child('UserComplaints').child('AllocEmp');
fb.once('value', snap => {
    console.log(snap.val()); // to console object
    Object.keys(snap.val()).map(k => {
        console.log(snap.val()[k])
        values.push(snap.val()[k])
    })
    alert(JSON.stringify(snap.val())) // to alert object
});
console.log(values)

Upvotes: 0

Ali Faris
Ali Faris

Reputation: 18592

you're not calling val() method , you're missing the parentheses

what you should do is 

var fb = firebase.database().ref().child('UserComplaints/AllocEmp/1515589858255');
fb.once('value', snap => {
    alert(snap.val()); //here is the problem
});

Upvotes: 1

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