Hi here is my angular js code. I am a complete novice in angular development.
<div ng-app="">
    <input type="text" ng-model="firstname">
    <input type="text" ng-model="lastname">
    <p>Firstname : <span ng-bind="firstname"></span>
    </p>
    <p>Lastname :<span ng-bind="lastname"></span>
    </p>
    <p>Full name :<span>{{firstname +" "+lastname}}</span>
    </p>
</div>
You can find the fiddle here
If I don't add the ng-controller directive the whole thing works. But when I adds the directive the whole thing stops working and the controller function is not getting executed. 
Actually I am trying something similar to this
 
    