我在模态表单中遇到了 AngularJS 和 Bootstrap UI 的问题，在该表单中取消表单会触发提交。这是我的Plunker来演示我的问题。取消时，我收到一个不应该发生的内部提交警报。这个片段有什么问题？
标记
<div ng-controller="modalForm">
<script type="text/ng-template" id="myModalContent.html">
<div id="messages" class="well" ng-show="message">{{ message }}</div>
<form name="addDomainForm" novalidate ng-submit="submit(addDomainForm)">
<div class="modal-header">
<h6 class="modal-title"><i class="fa fa-plus"></i> add new Item </h6>
</div>
<div class="modal-body">
<div class="form-group">
<input type="domain" ng-model="formData.domain" class="form-control" id="domainAddress" placeholder="Domain Adresse">
</div>
<textarea rows="10" ng-model="formData.description" class="form-control" placeholder="Beschreiben Sie Ihre Aktivität" ng-minlength="15"></textarea>
</div>
<div class="modal-footer">
<input type="submit" class="btn btn-primary" value="Save" />
<button class="btn btn-warning" ng-click="cancel()">Cancel</button>
</div>
</form>
</script>
<button class="btn btn-success" ng-click="open()"><i class="glyphicon glyphicon glyphicon-plus-sign icon-plus-sign"></i> new Item </button>
</div>
角
angular.module("testModal", ['ui.bootstrap'])
.controller("modalForm", function($scope, $modal) {
$scope.addDomainForm = {};
$scope.open = function (size) {
var modalInstance = $modal.open({
templateUrl: 'myModalContent.html',
controller: ModalInstanceCtrl,
size: size
});
};
});
var ModalInstanceCtrl = function ($scope, $modalInstance,$log) {
$scope.cancel = function () {
$modalInstance.dismiss('cancel');
};
$scope.submit = function(addDomainForm) {
alert();
};
};