Hi,
You *can* use PeriodicalExecutor for this. I'm not sure it buys you
much:
function loopThroughArray(array, interval, callback) {
var index = 0;
setTimeout(process, interval);
function process() {
var rv;
if (index < array.length) {
try {
rv = callback(array[index++]);
}
catch (e) {
}
if (rv !== false) {
setTimeout(process, interval);
}
}
}
}
Usage:
loopThroughArray([3, 2, 1, 0, -1, -2], 500, function(entry) {
display(entry);
return entry != 0;
});
Output:
3
2
1
0
Note it stops at zero, because the callback returned `false`.
You can do much the same with PeriodicalExecutor, or with setInterval.
I prefer re-scheduling the setTimeout because it's harder to lose
control of them through stoopid bugs involving forgetting to stop
them...
FWIW,
--
T.J. Crowder
Independent Software Engineer
tj / crowder software / com
www / crowder software / com
On Dec 17, 10:20 pm, JoJo <[email protected]> wrote:
> What's the best way to find which iteration the PeriodicalExecutuer is
> currently on? What I'm trying to do is step through an array slowly
> (period of 0.5 seconds) and having the ability to stop at an arbitrary
> time. The PeriodicalExecuter has the ability to stop, but it doesn't
> have the ability to step sequentially through an array. Or should I
> not even attempt to use PE's for this?
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