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Today, I will talk to you about the definition of asp procedures and functions, as well as the use of asp procedures and functions, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following contents. I hope you can get something according to this article.

In asp, procedures and functions refer to a group of code blocks that can perform specific functions. When we define our own procedures or functions, we can call them repeatedly in the script. For custom procedures or functions, we can also put them in an external folder and use the # include instruction to call them.

What is the definition of asp procedures and functions?

Define the process format:

Viewsourceprint?1Sub procedure name (variable 1, variable 2, variable n)

2' is the body of the procedure, that is, some statements to be executed when the procedure is called.

3EndSub

A Sub procedure is a set of asp statements contained between Sub and EndSub statements that perform actions but do not return values. Sub procedures can use parameters.

Example:

Viewsourceprint?1submysub (a _ r _ b) 'defines a subroutine with two parameters

2sum=a*b

3endsub

Define the function format:

Viewsourceprint?1Function function name (parameter 1, parameter 2, parameter n)

2 processing content

3 function name = processing result 'notice here that the function name is not misspelled.

4EndFunction

The Function function is a set of asp statements contained between Function and EndFunction statements. The Function procedure is similar to the Sub procedure, but the Function procedure can return a value. The Function procedure returns a value through the function name, which is assigned to the function name in the statement of the procedure.

For example:

Viewsourceprint?1Functionmy_func (afort b)

2dimsum

3sum=a*b

4myopia functionally sum' assigns values to function names

5EndFunction

What are the methods of using asp procedures and functions

The complete calling method of the procedure:

Viewsourceprint?1callmy_sub (aformab) 'invokes the subroutine using the call statement.

It is generally simplified to:

Viewsourceprint?1my_suba,b' does not use the call statement to call the subroutine, which is the most common method.

The calling method of the asp function:

Viewsourceprint?1sum=my_func (aformab) 'directly refers to the function name to make the call.

After reading the above, do you have any further understanding of the definition of asp procedures and functions and the use of asp procedures and functions? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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