fire the 'input' event after setting input value

This is required to support angular.js apps.
If DOM elements in the browser responds to 
'oninput', the angular.js framework listens for 
this event as a cue to update data bindings.

@@ -694,10 +694,17 @@
                     out = 'Unsupported field type: ' + nodeName;
                     break;
             }
+
             // firing the `change` event
             var changeEvent = document.createEvent("HTMLEvents");
             changeEvent.initEvent('change', true, true);
             field.dispatchEvent(changeEvent);
+
+            // firing the `input` event
+            var inputEvent = document.createEvent("HTMLEvents");
+            inputEvent.initEvent('input', true, true);
+            field.dispatchEvent(inputEvent);
+
             // blur the field
             try {
                 field.blur();