Revert back to always setting the attribute to empty string before removal. Fixes #9699.

src/attributes.js

@@ -366,14 +366,9 @@ jQuery.extend({
 		var propName;
 		if ( elem.nodeType === 1 ) {
 			name = jQuery.attrFix[ name ] || name;
-		
-			if ( jQuery.support.getSetAttribute ) {
-				// Use removeAttribute in browsers that support it
-				elem.removeAttribute( name );
-			} else {
-				jQuery.attr( elem, name, "" );
-				elem.removeAttributeNode( elem.getAttributeNode( name ) );
-			}
+
+			jQuery.attr( elem, name, "" );
+			elem.removeAttribute( name );
 
 			// Set corresponding property to false for boolean attributes
 			if ( rboolean.test( name ) && (propName = jQuery.propFix[ name ] || name) in elem ) {

test/unit/attributes.js

@@ -451,17 +451,18 @@ test("attr('tabindex', value)", function() {
 });
 
 test("removeAttr(String)", function() {
-	expect(7);
-	equals( jQuery("#mark").removeAttr( "class" )[0].className, "", "remove class" );
-	equals( jQuery("#form").removeAttr("id").attr("id"), undefined, "Remove id" );
-	equals( jQuery("#foo").attr("style", "position:absolute;").removeAttr("style").attr("style"), undefined, "Check removing style attribute" );
-	equals( jQuery("#form").attr("style", "position:absolute;").removeAttr("style").attr("style"), undefined, "Check removing style attribute on a form" );
-	equals( jQuery("#fx-test-group").attr("height", "3px").removeAttr("height").css("height"), "1px", "Removing height attribute has no effect on height set with style attribute" );
+	expect(8);
+	equal( jQuery("#mark").removeAttr( "class" )[0].className, "", "remove class" );
+	equal( jQuery("#form").removeAttr("id").attr("id"), undefined, "Remove id" );
+	equal( jQuery("#foo").attr("style", "position:absolute;").removeAttr("style").attr("style"), undefined, "Check removing style attribute" );
+	equal( jQuery("#form").attr("style", "position:absolute;").removeAttr("style").attr("style"), undefined, "Check removing style attribute on a form" );
+	equal( jQuery("<div style='position: absolute'></div>").appendTo("#foo").removeAttr("style").prop("style").cssText, "", "Check removing style attribute (#9699 Webkit)" );
+	equal( jQuery("#fx-test-group").attr("height", "3px").removeAttr("height").css("height"), "1px", "Removing height attribute has no effect on height set with style attribute" );
 
 	jQuery("#check1").removeAttr("checked").prop("checked", true).removeAttr("checked");
-	equals( document.getElementById("check1").checked, false, "removeAttr sets boolean properties to false" );
+	equal( document.getElementById("check1").checked, false, "removeAttr sets boolean properties to false" );
 	jQuery("#text1").prop("readOnly", true).removeAttr("readonly");
-	equals( document.getElementById("text1").readOnly, false, "removeAttr sets boolean properties to false" );
+	equal( document.getElementById("text1").readOnly, false, "removeAttr sets boolean properties to false" );
 });
 
 test("prop(String, Object)", function() {