angularjs - angularjs 1.4中的一种绑定(bind)方式

Question

根据Exploring Angular 1.3: One time bindings ;

Using new syntax is as easy as starting an expression with ::. So if we apply the one-time expression to our example above, we change this:

<p>Hello {{name}}!</p>

To this

<p>Hello {{::name}}!</p>

and it is now one way binding.

但是，当使用 ng-class 等 Angular 指令时，我们如何创建一次性绑定(bind)？我尝试了以下方法，但没有奏效:

ng-model="::name"
ng-class="['label',{'label-danger': 'High' == ::tsk.Priority}]:

Answer 1

在这里得到我的答案http://toddmotto.com/angular-one-time-binding-syntax/

{{ ::vm.user }}

<div ng-if="::vm.user.loggedIn"></div>

<div ng-class="::{ loggedIn: vm.user.loggedIn }"></div>

<ul>
  <li ng-repeat="user in ::vm.users"></li>
</ul>

感谢downvoters。