skedr
v1.1.0
Published
A simple scheduler library
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Skedr
====
Installation
npm install skedr
Usage
Skedr offers a lot of possibilities. First of all, let's review the types of schedulers:
- Repeaters
- Schedulers
- One-time (same as
setTimeout
);
All of these return an object of type Scheduler
, which has 3 main methods:
launch()
: Launches the scheduler object, whether to repeat, to schedule or to launch once.stop()
andclear()
: Stops the scheduler from whatever it's doingstopAfter(params)
:params
is a dictionary of one key, that can be whethertime
(in ms) orclicks
.
Repeaters
Repeaters are functions that repeat programatically, like you would with setInterval
. However, as they are stored in a Scheduler
object you can stop and launch them any time.
You instanciate a repeater like so:
var repeater = Skedr.repeat.every(<time>).for(<function>);
One-time scheduler
One time schedulers behave just like setTimeout
, however, as they are stored inside a Scheduler
object, you are free to .stop()
or .launch()
it whenever you wish, and it's function will always be stored in it.
var once = Skedr.once(<time>, <function>);
Schedulers
Schedulers are the real reason this library exists. With them you can schedule functions to execute in X time
, at X time and repeat every Y time
.
The library provides a lot of options to instanciate schedulers, but let's start with the most important one:
Starting in X minutes
var scheduler = Skedr.schedule.every(time_in_ms).for(nice_function).starting.in(in_x_minutes);
Starting at 3 PM
var scheduler = Skedr.schedule.every(time_in_ms).for(nice_function).starting.at(three_pm);
Both schedulers will have to be launched using .launch()
.
There are some utility functions to simplify scheduling:
Skedr.schedule.every.{hour|day|week}(time, function);
Dates
Of course, '3:45PM' won't work. So we provide a simple SchedulerDate
class which allows simple date writing.
var date = new Skedr.Date()
will instanciate a normal date, holding now
as the time.
var date = new Skedr.Date(true)
will instanciate a void date, at time 0;
To write 3:45 PM you just instanciate a date and use the utility functions (ms
, s
, m
, h
, D
, M
, Y
):
var PM_3_45 = (new Skedr.Date(true)).h(15).m(45);
Which allows you to call:
var scheduler = Skedr.schedule.every(<time_in_ms>).for(<nice_function>).starting.at(PM_3);