Difference between Action and Function

Difference between Action and Function?

♦ Action is a collection of Vb statements in QTP. It does not return any values.Function collection of Vb statements in QTP.
It returns single value.

♦ We can call functions within actions but we can't call actions within functions

♦ Generally functions are saved with ".vbs" extention where as actions will save with ".mts".

♦ Every Action will have its own Datatable where as function does not.

♦ 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.

♦ Action can contains Object Repository, Data table, Active screen etc. whereas function do not have these features.

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

♦ Action can/can not be resuable whereas functions are always reusable.

♦ Action Parameter have default values whereas VB script function do not have any default values.

♦ Action parameter type are byvalue only where vbscript functions can be passed byref.

♦ Action can have multiple output(returning) values whereas function can return only single value.

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