represents an expression whose evaluation is delayed until its value is externally requested.


specifies that the result from evaluating expr should be given in format fmt.


specifies that the result should be given as a response of the form rform.

Details and Options


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Basic Examples  (1)

Delayed specifies that the expression should not be evaluated until it is requested:

This link gives the current time. Revisiting the link gives the new time:

Options  (2)

CachePersistence  (1)

Deploy a Delayed that gives the current time and caches its result for up to 3 seconds:

UpdateInterval  (1)

Deploy a Delayed that refreshes every 3 seconds when displayed in a web browser:

Introduced in 2014
Updated in 2014