FLASH® LITE™ 2.x - Adobe Help and Support

Usage 2: The following example defines two event handlers and calls each of them. The first
call to setInterval() calls the callback1() function, which contains a trace() statement.
The second call to setInterval() passes the "interval called" string to the function
callback2() as a parameter.
function callback1() {
trace("interval called");
}
function callback2(arg) {
trace(arg);
}
setInterval( callback1, 1000 );
setInterval( callback2, 1000, "interval called" );
Usage 3: This example uses a method of an object. You must use this syntax when you want
to call a method that is defined for an object.
obj = new Object();
obj.interval = function() {
trace("interval function called");
}
setInterval( obj, "interval", 1000 );
obj2 = new Object();
obj2.interval = function(s) {
trace(s);
}
setInterval( obj2, "interval", 1000, "interval function called" );
You must use the second form of the setInterval() syntax to call a method of an object, as
shown in the following example:
setInterval( obj2, "interval", 1000, "interval function called" );
When working with this function, you need to be careful about the memory you use in a
SWF file. For example, when you remove a movie clip from the SWF file, it will not remove
any setInterval() function running within it. Always remove the setInterval() function
by using clearInterval() when you have finished using it, as shown in the following
example:
// create an event listener object for our MovieClipLoader instance
var listenerObjectbject = new Object();
listenerObject.onLoadInit = function(target_mc:MovieClip) {
trace("start interval");
/* after the target movie clip loaded, create a callback which executes
about every 1000 ms (1 second) and calls the intervalFunc function. */
target_mc.myInterval = setInterval(intervalFunc, 1000, target_mc);
};
Global Functions 75