自己动手实现jQuery Callbacks完整功能代码详解

                            {
                                h = true;
                                break;
                            }
                        }
                    }

                    return h;
                }

                // add a function
                this.add = function ( fn )
                {
                    if ( typeof fn === ‘function’ )
                    {
                        if ( ops.unique )
                        {
                            // check whether it had been added before
                            if ( fn.name !== ” && hasName( fn.name ) )
                            {
                                return this;
                            }