Easyui组合框按Enter自动清除框

Question

I have a problem with easyui combobox, when ı press enter after type, if value is do not exist in combobox, automatically clear the box. I cant get the text value.

How can i cancel it...

  <input class="easyui-combobox" id="productPK" name="productPK" style="width:200px"  required="required" data-options="valueField:'id',textField:'text'"/>

//script

var t = $('#productPK'); 
t.combobox('textbox').bind('keydown', function(e){
    if (e.keyCode == 13){   // when press ENTER key,           
      alert($(this).val()); 
    }
}); 

Answer 1

 $('#productPK').keyup(function(e){ if (e.keyCode == 13){ // when press ENTER key, alert($(this).val()); } }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-combobox/1.1.8/css/bootstrap-combobox.css" rel="stylesheet"/> <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-combobox/1.1.8/js/bootstrap-combobox.js"></script> <input class="easyui-combobox" id="productPK" name="productPK" style="width:200px" required="required" data-options="valueField:'id',textField:'text'"/> 

Please check if you want the same

Thanks