<!-- This is our View -->
<view> Hello {{name}}! </view>
<button bindtap="changeName"> Click me! </button>

// This is our App Service.
// This is our data.
var helloData = {
  name: 'TCSAS'
}

// Register a Page.
Page({  
  data: helloData,  
  changeName: function(e) {    
    // sent data change to view    
    this.setData({      
      name: 'World'    
    })  
  }
})