AngularJS ng-click stopPropagation

ngClick directive (as well as all other event directives) creates $event variable which is available on same scope. This variable is a reference to JS event object and can be used to call stopPropagation():

<table>
  <tr ng-repeat="user in users" ng-click="showUser(user)">
    <td>{{user.firstname}}</td>
    <td>{{user.lastname}}</td>
    <td>
      <button class="btn" ng-click="deleteUser(user.id, $index); $event.stopPropagation();">
        Delete
      </button>
    </td>              
  </tr>
</table>

PLUNKER

An addition to Stewie's answer. In case when your callback decides whether the propagation should be stopped or not, I found it useful to pass the $event object to the callback:

<div ng-click="parentHandler($event)">
  <div ng-click="childHandler($event)">
  </div>
</div>

And then in the callback itself, you can decide whether the propagation of the event should be stopped:

$scope.childHandler = function ($event) {
  if (wanna_stop_it()) {
    $event.stopPropagation();
  }
  ...
};