How in Jquery do I select the first blank input which is not a check box or a button

Question

How in Jquery do I select the first blank input which is not a check box or a button. I have the following:

$(':input[value="",type!="button",type!="checkbox"]:visible:first').focus(); 

Thanks for any suggestions

Answer 1

Tiny bit shorter

$("input[value='']:not(:checkbox,:button):visible:first").focus();

Answer 2

$('#formid')
  .find('input:blank:not(:checkbox,:button)')
  .filter(":visible:enabled")
  .first()
  .focus();

(During my testing, input[value=''] worked only for pre-filled empty input fields; input:blank didn't have that problem.)