How to pass client id of multiple controls to one jscript function

Hello there!,

     I have text boxes, drop down list boxes in my web page (C#) .
i am passing the client id of the controls to one jscript
that is

txtcode.Attributes.Add("OnChange", "return Validation(\'" + (txtcode.ClientID + "\',\'Code\');"));

 txtphone.Attributes.Add("OnChange", "return Validation(\'" + (txtphone.ClientID + "\',\phone number\');"));

 txtname.Attributes.Add("OnChange", "return Validation(\'" + (txtname.ClientID + "\',\'Name\');"));

txtCity.Attributes.Add("OnChange", "return Validation(\'" + (txtCity.ClientID + "\',\'City Code\');"));
           txtState.Attributes.Add("OnChange", "return Validation(\'" + (txtState.ClientID + "\',\'State Code\');"));

so i am here passing the client id of the control and i will catch the those in the jscript like

   function Validation(ctrl,type)
  {
   var str = document.getElementById(ctrl).value;
   if (str.length<1||!str.match(/[^\s]/))
      {

        alert("Please Enter"+" "+type);
        document.getElementById (ctrl).focus();
        document.getElementById (ctrl).value="";
        return false;
      }
        return true;
    }
    
i am just validating those controls when only there text changes.

consider when i want to validate those text boxes when the submit button is clicked, then how can i pass all their ids in to one function which executes when the submit button is clicked 

that is

like

btnSubmit.Attributes.Add("OnClick", "return whole(\"'some values"')");

Could you please tell me a solution?