Angular ng-change 不调用代码.我是否使用了错误的模型 [英] Angular ng-change not calling code. Am I using wrong model

问题描述

我正在使用 MEAN.js 生成器和我在网上找到的教程构建一个应用程序.在这里，我的一个 Angular 视图中有一个日期选择器.现在我希望 ng-change 指令被识别并做一些事情.在我更改日期时，此处显示的测试警报没有被调用.

<label class="control-label" for="statusdate">状态日期</label><div class="控件"><input type="date" ng-change="alert('something')" data-ng-model="statusDate" id="statusdate" class="form-control">

有人可以帮忙吗?我是 Angular 的新手.

另外，我在某处读到它可能是因为我使用了 data-ng-model 而不是 ng-model.可能是这种情况吗?如果是，那么两者有什么区别?

解决方案

您正在执行控制器中不存在的方法.

尝试像这样创建它:

$scope.alert = function(msg) {警报(味精)；};

I am building an app using MEAN.js generators and a tutorial I found online. Here I have a datepicker in one of my Angular views. For now I would like the ng-change directive to be recognized and do something. At the moment when I make a change to the date my test alert shown here does not get called.

<div class="form-group">
   <label class="control-label" for="statusdate">Status Date</label>
   <div class="controls">
      <input type="date"  ng-change="alert('something')" data-ng-model="statusDate" id="statusdate" class="form-control">
   </div>
</div>

Can somebody help? I am new to Angular.

Also, I read somewhere it may be because I used data-ng-model as opposed to ng-model. Could this be the case? If so then what is the difference between the two?

解决方案

You are executing a method that does not exist in the controller.

Try creating it like this:

$scope.alert = function(msg) {
    alert(msg);
 };

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