Effects: Allow 'null' for options - Fixes #8670 - null reference when using effects - Closes jquerygh-783

Author: gnarf

tests/unit/effects/effects_core.js

@@ -31,6 +31,17 @@ test( "Immediate Return Conditions", function() {
 	equal( ++count, 3, "Both Functions worked properly" );
 });
 
+asyncTest( "Parse of null for options", function() {
+	var hidden = $( "div.hidden" ),
+		count = 0;
+	expect( 1 );
+	hidden.show( "blind", null, 1, function() {
+		equal( ++count, 1, "null for options still works" );
+		start();
+	});
+});
+
+
 /* TODO: Disabled - Can't figure out why this is failing in IE 6/7
 test( "createWrapper and removeWrapper retain focused elements (#7595)", function() {
 	expect( 2 );

ui/jquery.ui.effect.js

@@ -1054,8 +1054,8 @@ function _normalizeArguments( effect, options, speed, callback ) {
 	// convert to an object
 	effect = { effect: effect };
 
-	// catch (effect)
-	if ( options === undefined ) {
+	// catch (effect, null, ...)
+	if ( options == null ) {
 		options = {};
 	}