D3 Examples - javascript call vala from index.html

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<!doctype html>
<html>
<head>
  <title>Hello</title>
</head>
<body>
  
  <div>
    <input id="input" value="Kismis">
    <button id="button">Greet!</button>
  </div>
​
  <div>
    Hello <span id="name"></span>
  </div>
​
  <script type="text/javascript">
    
    var app = new App();
    
    document.getElementById('button').onclick = function(){
      
      var creature = { name : document.getElementById('input').value};
​
      app.hello(creature, function(err, greet){
        var name = document.getElementById('name');
        name.innerText = greet.name;
      })  
    }
  </script>
  
</body>
</html>
    