How to increment value continuously on mouse hold using angularjs mouse events?
<p>I want to increment value continuously until mouse hold on a button using angularjs.</p>

<pre><code>&lt;button class="btn btn-primary" ng-click="add('increase');"&gt;&lt;/button&gt;

$scope.add = function(operation) {
  bill.quantity += 1;
}
</code></pre>