Jquery - Correct this function to grab all inputs EXCEPT radio buttons

JavaScript
1

I use the following function to clear the value of input fields onfocus and reset them back to the original value if left empty.

The problem is now I am trying to serialize a form that contains radio buttons, and the value is always empty,

How can I modify this so it doesn’t clear the value of input radio buttons?

<script type="text/javascript">
jQuery.fn.resetDV = function() {
	function _clearDV() {
		var _$ = $(this);
		if ( _$.val() == this.defaultValue ) { _$.val(''); }
	};
	function _resetDV() {
		var _$ = $(this);
		if ( _$.val() == '' ) { _$.val(this.defaultValue); }
	};
	return this.click(_clearDV).focus(_clearDV).blur(_resetDV);
}
	  
	 $(function() {
	$('input').resetDV();
});
</script>
2

I fixed it by changing the last line to:

$('input[type!=radio]').resetDV();