javascript - angularjs firebase app: can't display data -

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i starting firebase , angular want display data firebase in browser here code 

<!doctype html> <html> <head>      <!-- firebase -->      <script src="//cdn.firebase.com/js/client/2.2.1/firebase.js"></script> </head> <body>       title :<title></title><br>     content :<content></content><br>     <script type="text/javascript" >     var t=document.queryselector('title');     var c=document.queryselector('content');      var ref= new firebase('https://fir-app-4394a.firebaseio.com');     ref.on('child_changed',function(snapshot){         var data=snapshot.val();         console.log("title: " + data.title);         console.log("content: " + data.content);         t.innerhtml=data.title;         c.innerhtml=data.content;     });      </script> </body></html>

this data in firebase want display content: " fffff" title: "rfff "

i dont know why there no connection firebase :d

you using firebase legacy sdk. set new one.

<script src="https://www.gstatic.com/firebasejs/3.1.0/firebase.js"></script>

and need start app little diferrent. instead of going new firebase must use firebase.initializeapp(config); , firebase.database().ref() ref.

<script>   // initialize firebase   var config = {     apikey: "",     authdomain: "",     databaseurl: "",     storagebucket: "",   };   firebase.initializeapp(config);   var ref= firebase.database().ref(); </script>

to config details go new console overview clicking in app name , hit add firebase web app.


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