lib/interval.js
function Interval(func, options) {
    this.func = func;
    this.delay = options.delay || 16;
    this.lifetime = options.lifetime;
    this.useRequestAnimationFrame = options.useRequestAnimationFrame && window.requestAnimationFrame && window.cancelAnimationFrame;
    this.interval = null;
    this.gcTimeout = null;
}
function Interval(func, options) {
    this.func = func;
    this.delay = options.delay || 16;
    this.lifetime = options.lifetime;
    this.useRequestAnimationFrame = options.useRequestAnimationFrame && window.requestAnimationFrame && window.cancelAnimationFrame;
    this.interval = null;
    this.gcTimeout = null;
}
function Interval ( func , options ) { this . func = func ; this . delay = options . delay || 16 ; this . lifetime = options . lifetime ; this . useRequestAnimationFrame = options . useRequestAnimationFrame && window . requestAnimationFrame && window . cancelAnimationFrame ; this . interval = null ; this . gcTimeout = null ; }
Interval.js

@constructor
@param {function} func - The function you want to be called repeatly
@param {int} delay - milliseconds that should wait before each call
@param {int} lifetime - if set, clearInterval will be called after `lifetime` milliseconds
Interval . js