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function DemoCtrl($scope) {
	//這邊不需要寫任何的code!
}

<div ng-app>
  <h2>AngularJs Demo</h2>
  <div ng-controller="DemoCtrl">
    <div>
      <input type='text' ng-model='userInput'>
    </div>
    <div>
      <span>使用者輸入：{{userInput}}</span>
    </div>
  </div>
</div>