Effects: Jump to final state and execute callbacks when $.fx.off is set to true. Fixes #6131 - Dialog breaks when $.fx.off. Partial fix for #5512 - jQuery.fx.off and effect on jQuery UI Effects.

Author: scottgonzalez

ui/jquery.effects.core.js

@@ -456,15 +456,29 @@ function standardSpeed( speed ) {
 $.fn.extend({
 	effect: function(effect, options, speed, callback) {
 		var args = _normalizeArguments.apply(this, arguments),
-			// TODO: make effects takes actual parameters instead of a hash
+			// TODO: make effects take actual parameters instead of a hash
 			args2 = {
 				options: args[1],
 				duration: args[2],
 				callback: args[3]
 			},
+			mode = args2.options.mode,
 			effectMethod = $.effects[effect];
 
-		return effectMethod && !$.fx.off ? effectMethod.call(this, args2) : this;
+		if ( $.fx.off || !effectMethod ) {
+			// delegate to the original method (e.g., .show()) if possible
+			if ( mode ) {
+				return this[ mode ]( args2.duration, args2.callback );
+			} else {
+				return this.each(function() {
+					if ( args2.callback ) {
+						args2.callback.call( this );
+					}
+				});
+			}
+		}
+		
+		return effectMethod.call(this, args2);
 	},
 
 	_show: $.fn.show,