Usage
var incrdecr = require('observ-incrdecr')
// incrdecr(step, minValue, maxValue, initialValue)
var val = incrdecr(6, -10, 10, 0)
val() // 0
val.events.increment()
val() // 6
val.events.increment()
val() // 10
val.events.decrement()
val.events.decrement()
val.events.decrement()
val() // -8
val.events.decrement()
val() // -10
val.events.change(1)
val() // 1
val.events.change(-31)
val() // -10
val.events.change(255)
val() // 10
val.events.change(6)
val() // 6
val.events.change('notanumber')
t.ok(val(), 6)
Notes
uses Math.round() internally. No floats, because floats suck :(
all arguments are optional, the default values are
- step: 1
- min: Number.MIN_VALUE
- max: Number.MAX_VALUE
- init: 0