如何$ setdirty到单个输入

Question

我有一点问题.我想设置脏一个输入,我的意思是,因为当我自动给出一个值时它会保持在pristine类中,不会改变,也不会保存新值.

如果我编辑它,它可以工作并更改类.我想取消那pristine堂课.如果有人知道请告诉我.

<form class="form-horizontal" ng-repeat="studiant in studiants" name="form" id="form">

  <input type="hidden" name="id" value="{{studiant.studiant_id}}" class="form-control" disabled>

  <div class="form-group">
    <label for="school" class="col-md-2 control-label">School</label>
    <div class="col-md-1">
      <input type="text" id="school" name="school" class="form-control" ng-init="studiant.school=studiant.studiant_school" ng-model="studiant.school">
    </div>
  </div>
  <div class="form-group">
    <label for="name" class="col-md-2 control-label">Student's Name</label>
    <div class="col-md-10">
      <input type="text" id="name" name="name" class="form-control" ng-init="studiant.name=studiant.studiant_name" ng-model="studiant.name">
    </div>
  </div>
</form>

和剧本:

document.getElementbyId('name').value = "anything";

或者,如果我做错了,我必须改变value用的ng-model东西,请帮助我.

Answer 1

http://plnkr.co/edit/bVoljJqiK3CLB2xqZ6Zm?p=preview

你可以在那里看到一个有效的例子.

确保为表单和输入设置了名称attr.

HTML示例:

<button id="dirty-button" ng-click="addText(); myForm.myText.$setDirty()">Make Dirty</button>
<hr> 
<form name="myForm">   
<input name="myText" id="myTextInput" type="text" ng-model="myText" required>
</form>
<br/>
<span ng-show="myForm.myText.$dirty">it's dirty now</span>

一个简单的功能:

$scope.addText = function() {
  $scope.myText = "now I'm dirty";
}