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The demands specification object can occur in a few forms:

Recommended:

funcName

the string name of the creator function for the demanding subcomponent.
NOTE: If this property is not present, the original function name (agreeing with the first argument to fluid.demands()) is to be used instead

options

an object specifying how the options argument to a component's creator function (identified as a pseudoargument is to be assembled

container

an IoC-resolved reference (most likely of the form {parentComponent}.dom.selectorName expressing where the container argument to a View is to be taken from

any pseudoargument name

The name of any pseudoargument defined by the grade of the component which is to be created, representing the slot of a positional argument in the transformed argument list

Alternative:

funcName

the string name of the creator function for the demanding subcomponent.
NOTE: If this property is not present, the original function name (agreeing with the first argument to fluid.demands()) is to be used instead

container

an IoC-resolved reference (most likely of the form {parentComponent}.dom.selectorName expressing where the container argument to a View is to be taken from

mergeOptions

an array of objects composing the options argument to a component's creator function is to be assembled by merging several different IoC-resolved records together

any pseudoargument name

The name of any pseudoargument defined by the grade of the component which is to be created, representing the slot of a positional argument in the transformed argument list

mergeOptions is a rarely-used alternative to options. It may be useful in cases where a user wants to write a single demands block, yet have several values merged together in a particular sequence if the demands block acts.

Note that mergeOptions and options are mutually exclusive: Use one or the other, but not both.

Alternative:

funcName

the string name of the creator function for the demanding subcomponent.
NOTE: If this property is not present, the original function name (agreeing with the first argument to fluid.demands()) is to be used instead

args

array of parameters to the function, or a single argument.
IMPORTANT NOTE: If the args property is used, its contents will be merged with the component's defaults, but options specified through a parent component's components object will be ignored completely.

Note: If the args record is used, NONE of the other mentioned elements can be present (none of options, mergeOptions, container, etc.).

Alternative:

args

array of parameters to the function, or a single argument.
IMPORTANT NOTE: If the args property is used, its contents will be merged with the component's defaults, but options specified through a parent component's components object will be ignored completely.

In this case, the funcName entry is interpreted as being empty.

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