I realised that in current Dart SDK version 0.4.1.0_r19425 methods like setTimeout
, setInterval
, clearTimeout
, clearInterval
aren't part of Window
class any more and they all moved to WorkerContext
.
Is there any documentation on how to use them now? Do I need to create a new instance of WorkerContext
every time I want to use them?
To replace setInterval with setTimeout , change this: setInterval(function() { tick() }, 9000); to: setTimeout(function repeat() { tick(); setTimeout(repeat, 9000); }, 9000);
“setinterval for 5 times” Code Answer'svar intervalID = setInterval(alert, 1000); // Will alert every second. // clearInterval(intervalID); // Will clear the timer. setTimeout(alert, 1000); // Will alert once, after a second.
Notes. The setTimeout() is executed only once. If you need repeated executions, use setInterval() instead. Use the clearTimeout() method to prevent the function from starting.
In addition to Timer mentioned by Chris, there is a Future-based API:
var future = new Future.delayed(const Duration(milliseconds: 10), doStuffCallback);
There is not yet direct support for cancelling a Future callback, but this works pretty well:
var future = new Future.delayed(const Duration(milliseconds: 10)); var subscription = future.asStream().listen(doStuffCallback); // ... subscription.cancel();
Hopefully, there will soon be a Stream version of Timer.repeating as well.
You can use:
1) SetInterval
_timer = new Timer.periodic(const Duration(seconds: 2), functionBack); Where: `functionBack(Timer timer) { print('again'); }
2) SetTimeOut
_timer = Timer(Duration(seconds: 5), () => print('done')); Where _time is type Time
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