update: function () {

            var date, fromArgs = false;

            if (arguments && arguments.length && (typeof arguments[0] === 'string' || arguments[0] instanceof Date)) {

                date = arguments[0];

                fromArgs = true;

            } else {

                //这里加了个判断，原来只有else部分，增加了对自定义格式的处理

                if (this.element.val().length == 6) {

                    date = this.element.val().substring(0, 4) + "-" + this.element.val().substring(4, 6) + "-01";

                } else {

                    date = (this.isInput ? this.element.val() : this.element.find('input').val()) || this.element.data('date') || this.initialDate;

                    if (typeof date == 'string' || date instanceof String) {

                        date = date.replace(/^\s+|\s+$/g, '');

                    }

                }

            }

            if (!date) {

                date = new Date();

                fromArgs = false;

            }

            this.date = DPGlobal.parseDate(date, this.format, this.language, this.formatType);

            if (fromArgs) this.setValue();

            if (this.date < this.startDate) {

                this.viewDate = new Date(this.startDate);

            } else if (this.date > this.endDate) {

                this.viewDate = new Date(this.endDate);

            } else {

                this.viewDate = new Date(this.date);

            }

            this.fill();

        }