Page 159 - DCAP512_WAP_AND_WML

Unit 11: Using WML Script

More about Functions Notes
 Can be predefined by the system
 Can be created by the developer
 Are typically grouped into libraries

 Accept input parameters, then return values based on the input
Compilation Units
 This is an example of a single wmls file

 Scope is defined by the presence of extern
extern function f1() {
…
}
extern function f2() {

…
}
extern function f3() {
…

}

Example: Another example is given below.
extern function openDialog() {
var doContinue =Dialogs.confirm(“Continue?”, “Yes “, “No”);
// yes is ok
// no is cancel

if (doContinue) {
WMLBrowser.setVar (“test”, “we continued”);
}
else {

WMLBrowser.setVar (“test”, “we stop continue”);
}
WMLBrowser.refresh();
}

Return Values
These accomplish the same thing.
extern function MyFunct() {

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