two things:
1) whenever you chain methods, they must return something:
var foo = function(){ return "foo"; };
foo().indexOf('f'); //0
Note we're calling foo(), which returns "foo", and then .indexOf is a method
of String, which foo returns.
your method, iterateClock, does not return anything, so your example:
this.iterateClock(current, future).periodical(1000, this);
you call this.iterateClock() which doesn't return anything and then attempt
to call .periodical (a method of functions) on the undefined non-value.
If you want to call periodical on iterateClock, you should call it directly
on the method:
this.iterateClock.periodical(1000, this, [current, future]);
And if you wanted to chain something off of that method, you'd need to
return something, for example, if you added "return this;" to iterateClock,
you could do this:
this.iterateClock(current, future).foo()
if your class had a "foo" method.
2) just a side note, you have a syntax error in your example. your last
method in the example has a comma after it; this will break in IE.
On Tue, Jul 7, 2009 at 1:50 PM, trobrock (via Nabble) <
[email protected]<ml-user%[email protected]>
> wrote:
>
> I am having trouble getting a class function to run periodically. It
> runs once fine, but then I get a function is undefined error. The
> related code can be seen here: http://gist.github.com/142298
>
>
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