title: Select2 Widge Reset Selected Value
body: <p>How to reset selected value in yii2 widget select2 using jQuery or JavaScript? I've tried to use <code>$("#select2id").val("").trigger("change");</code> and it show the placeholder, but the first item is always automatically selected.</p>
  
  <p><strong>EDIT:</strong> I'm using this widget for make dependency dropdown. the widget that the first item always automatically selected is the dependent widget.</p>
  
  <p><a href="https://i.stack.imgur.com/aCfhj.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/aCfhj.jpg" alt="expected result"></a></p>