Calling functions

[thriftyspider]

Hi I am fairly new to ASP so don't laugh too loud. Firstly, how do I call functions in ASP and is it possible to call a javascript from ASP.

Regards
Rob

[c010depunkk]

You call a function like this:

PHP: Select all

void DoNothing() { // this is the function declaration
  // do a bit of nothing
}
// call it like so
DoNothing(); 

If the function requires parameters then they go between the parentheses:

PHP: Select all

void AddTwoNumbers(int num1, int num2) { // this function requires 2 integers
  // add the numbers
  int result = num1 + num2;
}
// call it like so
AddTwoNumbers(2, 4); 

Then, if the function also returns a value you can store it in a variable like so:

PHP: Select all

int GetSum(int num1, int num2) { // this function requires 2 integers
  int result = num1 + num2; // add the numbers
  return result; // and return the result
 }
 // call it like so and store the returned value
int function_result = AddTwoNumbers(2, 4);
// now 'function_result' equals 6 

Hope that makes some sense.

Your question was a bit vague. If you could be a bit more specific or post some code, it would help us help you.

[thriftyspider]

Hi thanks for that. I fully understand the javascript you posted but wondered if a javascript function can be called by using VB script. The reason I ask is that I am running a small access database on a site and as far as I am aware you can't make a connection via javascript, (or can you?), so I am using ASP VB script to access the database and javascript to do other stuff. Or am I asking too much?

Cheers
Rob

[c010depunkk]

Javascript is client-side. ASP is server-side.

That means that ASP generates HTML and Javascript and sends it to the browser. Javascript runs on the client browser and can't access a server. The two languages can't "run" together because one lives on a web server and the other lives in browsers, so to speak.

I think you could load stuff from a databank using Ajax, but I'm not an Ajax person at all.

[thriftyspider]

Thanks, that makes a lot of sense now. I should have realised that.
Cheers

[c010depunkk]

I can understand you. It took me a while to grasp the concept of client / server side languages. When I was learning PHP I kept getting confused about what I could and couldn't do because I didn't realize that HTML is client side and PHP generates HTML on the server and sends the output to the browser....

Anyway, you're welcome and good luck!