How to get specific value or row data from firebase in web

Question

basically I new to firebase, I just want to that how to retrive specific data from firebase , [firabase](https://i.stack.imgur.com/vk0S6.png[1]

as you can see in above image I want to retrieve like in Sql we use Select CellNum from Student where Email="Adnan@gmail.com. How can I do that in firebase web javascript?

Welcome to Stack Overflow. Could you include the (formatted) code you have tried so far? — wibeasley, Jun 25 '18 at 16:22
See https://stackoverflow.com/questions/40471284/firebase-search-by-child-value — Frank van Puffelen, Jun 25 '18 at 17:09

score 5 · Accepted Answer · edited Jun 25 '18 at 17:10

5

Try the following:

firebase.database().ref().child("Students").orderByChild("Email").equalTo("Adnan@gmail.com").once("value", function (snapshot) {
  snapshot.forEach(function(childSnapshot) {
    var cellNum=childSnapshot.val().CellNum;
  });
});

The snapshot is at Students, then you loop inside the id 22222 and retrieve the CellNum. The orderByChild is the query where Email="Adnan@gmail.com"

edited Jun 25 '18 at 17:10

Frank van Puffelen

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answered Jun 25 '18 at 16:40

Peter Haddad

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yeah this works , thanks – adnan hyder Jun 25 '18 at 18:48

How to get specific value or row data from firebase in web

1 Answers1