
Contents > Developing ColdFusion MX Applications > Using XML and WDDX > Moving complex data across the web with WDDX > How WDDX works Time zone processing

Time zone processing

Producers and consumers of WDDX packets can be in geographically dispersed locations. Therefore, it is important to use time zone information when serializing and deserializing data, to ensure that date-time values are represented correctly.

The cfwddx action=cfml2wddx tag useTimezoneInfo attribute specifies whether to use time zone information in serializing the date-time data. In the JavaScript implementation, useTimezoneInfo is a property of the WddxSerializer object. In both cases the default useTimezoneInfo value is True.

Date-time values in WDDX are represented using a subset of the ISO8601 format. Time zone information is represented as an hour/minute offset from Coordinated Universal Time (UTC); for example, "2002-9-8T12:6:26-4:0".

When the cfwddx tag deserializes WDDX to CFML, it automatically uses available time zone information, and converts date-time values to local time. In this way, you do not need to worry about the details of time zone conversions.

However, when the JavaScript objects supplied with ColdFusion deserialize WDDX to JavaScript expressions, they do not use time zone information, because in JavaScript it is difficult to determine the time zone of the browser.


Contents > Developing ColdFusion MX Applications > Using XML and WDDX > Moving complex data across the web with WDDX > How WDDX works Time zone processing

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