Introducing the utility methods

We used one of the utility methods available in a datepicker in the previous example, setDefaults is used to set configuration options on all datepicker instances. In addition to this, there are several other utility methods that we can use; these are shown in the following table:

Utility	Used to…
formatDate	Transform a date object into a string in a specified format. While using the dateFormat option, dates are returned in this specified format using the formatDate method. This method accepts three arguments—the format to convert the date to (see dateFormat in configurable options of the picker), the date object to convert, and an optional configuration object containing additional settings. The following options can be provided: dayNamesShort, dayNames, monthNamesShort, and monthNames.
iso8601Week	Return the week number that a specified date falls on according to the ISO 8601 date and time standard. This method accepts a single argument—the date...