javascript - Focus on first visible and empty select/dropdown using jQuery -

I make some assumptions for the required fields and then I want to focus on the first scene texterea or text box or select .

The following code is okay for Textera and Text Box, but not for selection. How can I make a check for blank selection in the following forged statements? Any help would be appreciated.

  $ ("textarea: empty: visible, input [value = ']]: visible, select the option [value =' ']: visible"). ) .focus ();   
 here   
 
 
 you  .filter () < / Code>  
  $ ("textarea: empty: visible, input [value ="]: visible, "). Filter (function () {if ($ (this) .is ('select')) (If (this.value === "") {Back true;} and {return false;}} else {return true;} }).);   
 Demo  ----->