Difference between Action and Function

最新推荐文章于 2025-06-20 14:42:53 发布
转载 最新推荐文章于 2025-06-20 14:42:53 发布 · 487 阅读 · 0

本文详细解析了QTP环境中Action与Function的概念、调用方式、保存格式、内部特性、可重用性及参数处理等方面的差异，帮助开发者更好地理解和运用这两种基本元素。

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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