Yii2 kartik typeahead - get number of suggestions - widget

Question

I'm using kartik's typeahead widget for Yii2 in a view:
echo \kartik\typeahead\Typeahead::widget([
'name' => 'serial_product',
'options' => [
'placeholder' => 'Filter as you type ...',
'autofocus' => "autofocus"
],
'scrollable' => TRUE,
'pluginOptions' => [
'highlight' => TRUE,
'minLength' => 3
],
'dataset' => [
[
'remote' => Url::to(['transfers/ajaxgetinventoryitemsnew']) . '?search=%QUERY',
'limit' => 10
]
],
'pluginEvents' => [
"typeahead:selected" => "function(obj, item) { add_item(item.id); return false;}",
],
]);
How can i get the number of loaded suggestions after the remote dataset is retrieved to execute a javascript function like:
displaynumber(NUMBEROFSUGGESTIONS);

Answer 1

After checking through the source of kartiks widget i came up with the following solution:
echo \kartik\typeahead\Typeahead::widget([
'name' => 'serial_product',
'options' => [
'placeholder' => 'Filter as you type ...',
'autofocus' => "autofocus",
'id' => 'serial_product'
],
'scrollable' => TRUE,
'pluginOptions' => [
'highlight' => TRUE,
'minLength' => 3
],
'dataset' => [
[
'remote' => [
'url' => Url::to(['transfers/ajaxgetinventoryitemsnew']) . '?search=%QUERY',
'ajax' => ['complete' => new JsExpression("function(response)
{
jQuery('#serial_product').removeClass('loading');
checkresult(response.responseText);
}")]
],
'limit' => 10
]
],
'pluginEvents' => [
"typeahead:selected" => "function(obj, item) { checkresult2(item); return false;}",
],
]);
where response.responseText is containing the response from server (json).
function checkresult(response) {
var arr = $.parseJSON(response);
console.log(arr.length);
}
With this function i can get then count of suggestions delivered from server.