rt-info">
<strong>Note:</strong> Like other core Angular identifiers, built-in services always start with <code>$</code>
(e.g. <code>$http</code>).
</div>


<h2 id="using-a-service">Using a Service</h2>
<p>To use an Angular service, you add it as a dependency for the component (controller, service,
filter or directive) that depends on the service. Angular&#39;s <a href="guide/di">dependency injection</a>
subsystem takes care of the rest.</p>
<p>

<div>
  <a ng-click="openPlunkr('examples/example-example42')