Comments on: Javascript timer – advanced features, simple to use

By: zp bappi

zp bappi — Tue, 04 May 2010 11:16:21 +0000

@darck: i believe you want the start method to work as resume if the timer is paused. right? well, thats what i did. please check the api page (links at the bottom of the post) for start method. it says, “Starts the timer initially or if it was stopped. If timer was paused, start work as resume.”
hope that helps. :)

By: darck

darck — Mon, 03 May 2010 08:05:05 +0000

1)
var timer = new Timer();
timer.interval(10000)
.addCallback(clock)
.start()
.stop();

timer.start();

should work exactly same as:

2)
var timer = new Timer();
timer.interval(10000)
.addCallback(clock)
.start();

timer.restart();

and different than:

3)
var timer = new Timer();
timer.interval(10000)
.addCallback(clock)
.start()
.pause();

timer.start();

1) and 2) should restart timer counter before starting countdown again, but 3) should only pause counter and resume it when invoked start() again.

By: zp bappi

zp bappi — Fri, 30 Apr 2010 17:55:29 +0000

@darck: sorry, i am not familiar with delphi’s timer. and, when you start/stop a timer, it should not remember where it was paused. that’s true to the most of the people. please explain why it shouldn’t be altered. (with some test case, if needed)

@ricardo verhaeg: thanks for your suggestion. i have many other things too for the next version. but, i am not getting enough free time to complete it. i will do it soon i hope and will post a link here.

By: Ricardo Verhaeg

Ricardo Verhaeg — Mon, 19 Apr 2010 19:16:40 +0000

One suggestion is: you could pass a third parameter or even an optional second (with type check) to match the “runOnce”, why is that?
A – Perhaps I want to keep the clcok running but only check my mail once (in the given example) so I’ld put something like:

var timer = new Timer();
timer.interval(1000)
.addCallback(clock)
.addCallback(checkMail,10,true)
.start();

or:

var timer = new Timer();
timer.interval(1000)
.addCallback(clock)
.addCallback(somethingInOneSecond,true)
.start();

But well I’m really impressed of the fact that you made it with parallel! I was really trying to find that out! thanks!

By: darck

darck — Fri, 26 Feb 2010 10:34:00 +0000

In my opinion start and stop shouldn’t alter paused state of timer. In borland delphi’s timer is option enabled. Maybe you can change pause functionality or add enabled state. It works simply as pause – timer doesn’t count ticks and enabled property is not related with any other method.

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By: zp bappi

zp bappi — Fri, 24 Oct 2008 12:58:12 +0000

@Eric Shepherd
i moved the initialization codes into a method “_init()” just to keep the default constructor clean. there’s no harm if i put the codes in “var Timer = function(millis, callback){…}”.

thanks for trying it differently. let me know if there is any improvement i can do, or anything you came up with.

zp bappi.

By: Eric Shepherd

Eric Shepherd — Thu, 23 Oct 2008 15:26:40 +0000

Nice work! This is exactly what I was looking for. I’m curious about one thing, though – why did you remove the constructor into the instances with the init() function? I moved it back into the constructor and nothing seems to break.

Thanks!