WAP Development with WML and WMLScript

Using WMLScript Functions

There are three types of WMLScript functions: local functions, external functions, and library functions. Which one you use will depend upon the requirement(s) of your particular WAP application. When creating WMLScript functions, bear the following in mind:

• You cannot nest functions.

• Each function name must be unique within each file.

• Make sure you pass the exact number of arguments into the function that it expects.

• Variables can only be accessed in the same WMLScript function in which they are declared. (There are no global variables within a WMLScript file.)

Local Functions

If you reference a function from within another function that is defined in the same WMLScript file, the referenced function is a local function. ...