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What is the difference between functions and actions in

QTP?

Answer Posted / deven

&#9830;It returns single value.
&#9830; we can call functions within actions but we can't call
actions within functions

&#9830; Generally functions are saved with ".vbs" extension
whereas actions will save with ".mts".

&#9830; Every Action will have its own Datatable whereas function
does not.

&#9830; Action can have a object repository associated with it
while a function can't. A function is just lines of code
with
some/none parameters and a single return value while an
action can have more than one output parameters.

&#9830; Action can contain Object Repository, Data table, Active
screen etc. whereas function do not have these features.

&#9830; Action is internal to QTP whereas Function is just lines
of code with some/none parameters and a single return value.

&#9830; Action can/cannot be resuable whereas functions are
always reusable.

&#9830; Action Parameter have default values whereas VB script
functions do not have any default values.

&#9830; Action parameter type are byvalue only where vbscript
functions can be passed byref.

&#9830; Action can have multiple output(returning) values whereas
function can return only single value.

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