Angularjs 之美 - 回车激活确定按钮

<div ng-show="dialog.DialogType=='editfolder'">
<div class="modal-header">
<h4 class="modal-title">文件夹</h4>
<small class="font-bold"></small>
</div>
<div class="modal-body">
<input class="form-control" ng-model="action.currentEditFolderText" ng-keyup="$event.keyCode==13?action.saveAddFolder():0" />
</div>
<div class="modal-footer">
<button type="button" ng-click="action.saveAddFolder()" class="btn btn-primary">确定</button>
<button type="button" class="btn btn-default" data-dismiss="modal" ng-click="dialog.DialogVisible=false">取消</button>
</div>
</div>