GUIDES Callbacks Suspend Callback
Moddable SDK 6.0.0
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Callbacks
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One-Time Callback
Repeating Callback
Repeating Callback with Initial Delay
Immediate Callback
Reschedule Callback
Cancel Callback
Suspend Callback
What About setTimeout?
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Sleep

Suspend Callback

Use Timer.schedule() to suspend a callback. Once a callback has been suspended, it will not be invoked again until it is rescheduled.

Suspending a callback and later rescheduling is often lighter than creating and canceling callbacks.

This example creates a repeating callback that suspends itself when invoked. Two seconds after being suspended, another callback reschedules the repeating callback to be invoked again in 1000 milliseconds.

const repeating = Timer.repeat(() => {
	trace("tick\n");
	// suspend
	Timer.schedule(repeating);
}, 5000);

Timer.set(() => {
	Timer.schedule(repeating, 1000, 1000);
}, 7000);

Sometimes you want a callback to begin in an unscheduled state, so it can be scheduled later. Both Timer.set() and Timer.repeat() create scheduled callbacks. Use either and then immediately unschedule the callback.

const id = Timer.repeat(() => {
	trace("tick\n");
}, 1000);

// immediately suspend
Timer.schedule(id);