ng-submit 不会触发事件

ng-submit doesn't fire the event

我对这个简单的表单提交感到困惑。感觉什么都对,就是不行

我的html

<html ng-app = 'myApp'>      
<div ng-controller="Tabs">  
...

       <form ng-submit="sendClicked()" >
          <div class="input-group">
              <input type="text" class="form-control" ng-model="text"/>

             <span class="input-group-btn" >
                 <button class="btn btn-info" type="submit">SEND</button>
             </span>
          </div>
       </form>
  ...
</div>
</html>

我的app.js

myApp.controller('Tabs', function ($scope) {

    $scope.sendClicked = function () {
        console.log('can reach here');
        if($scope.text) {
                socket.emit('send message', $scope.text);
                $scope.text = null;
        }
    };

});

必须是输入类型提交,但是你有按钮,它从来没有类型属性属性