Make sure that dynamically-created elements don't have a parent. Fixe…

…s #5638.

src/core.js

@@ -50,7 +50,7 @@ var jQuery = function( selector, context ) {
 
 jQuery.fn = jQuery.prototype = {
 	init: function( selector, context ) {
-		var match, elem, ret, doc;
+		var match, elem, ret, doc, parent;
 
 		// Handle $(""), $(null), or $(undefined)
 		if ( !selector ) {
@@ -85,7 +85,12 @@ jQuery.fn = jQuery.prototype = {
 
 					} else {
 						ret = buildFragment( [ match[1] ], [ doc ] );
-						selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes;
+						parent = ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment;
+						selector = [];
+
+						while ( parent.firstChild ) {
+							selector.push( parent.removeChild( parent.firstChild ) );
+						}
 					}
 
 				// HANDLE: $("#id")

test/unit/core.js

@@ -12,7 +12,7 @@ test("Basic requirements", function() {
 });
 
 test("jQuery()", function() {
-	expect(12);
+	expect(15);
 
 	// Basic constructor's behavior
 
@@ -51,10 +51,13 @@ test("jQuery()", function() {
 
 	var code = jQuery("<code/>");
 	equals( code.length, 1, "Correct number of elements generated for code" );
+	equals( code.parent().length, 0, "Make sure that the generated HTML has no parent." );
 	var img = jQuery("<img/>");
 	equals( img.length, 1, "Correct number of elements generated for img" );
+	equals( img.parent().length, 0, "Make sure that the generated HTML has no parent." );
 	var div = jQuery("<div/><hr/><code/><b/>");
 	equals( div.length, 4, "Correct number of elements generated for div hr code b" );
+	equals( div.parent().length, 0, "Make sure that the generated HTML has no parent." );
 
 	equals( jQuery([1,2,3]).get(1), 2, "Test passing an array to the factory" );