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<div ng-app="ModuleA" ng-controller="MsgController">  
    <div ng-click="Item1='hi 你好!'">{{ Item1 || "按一下"}}</div>
    
    <div>
        <input type="text" ng-model="say" />
        <button ng-click="say='hello 你好!'">按一下</button>
    </div>
    <div>
        {{count || 0}} 
        <button ng-click="count = count + 1">+1</button>
    </div>
    <div>
        <button ng-click="Say()">觸發 controller 中的方法</button>
    </div>
</div>

var moduleA = angular.module("ModuleA",[]);
moduleA.controller("MsgController",function($scope) {
    $scope.Say = function(){
       alert('hello');
    };
});