JSFiddle - React, Tailwind, and code Playground

by learningloop

HTML

<script src="https://cdn.firebase.com/js/client/2.0.4/firebase.js"></script>
<button onclick="pushdata();">Push data</button>
<button onclick="getid();">Get ID</button>

JavaScript

var fkey;
function pushdata(){
    var myFirebaseRef = new Firebase("https://sandyboxy.firebaseio.com/users/xyz");
    myFirebaseRef.push({
     author: "gracehop",
     title: "Announcing COBOL, a New Programming Language"
    });
        
    myFirebaseRef.on('child_added', function(snapshot) {
    fkey = snapshot.key();
    });
    
}

function getid(){
 alert(fkey);       
}