jQuery get params from any parent element

generateParam.ext.js

$.fn.generateParams = function() {
	var rsubmittable = /^(?:input|select|textarea|keygen)/i;
	var rcheckableType = ( /^(?:checkbox|radio)$/i );
	var rCRLF = /\r?\n/g;
	
	return this
		.find("input, select, textarea, keygen")
		.not(":disabled")
		.filter(function(){
			var type = this.type;
			return this.name && !jQuery( this ).is( ":disabled" ) &&
				rsubmittable.test( this.nodeName ) &&
				( this.checked || !rcheckableType.test( type ) );
		})
		.map( function( i, elem ) {
			var val = jQuery( this ).val();

			return val == null ?
				null :
				jQuery.isArray( val ) ?
					jQuery.map( val, function( val ) {
						return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
					} ) :
					{ name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
		} ).get();
}