[рони]

dima85,

class Timer {
    constructor(data) {
    this.data = data.map(obj => ({...obj,beginTime : performance.now()}));
    requestAnimationFrame(this.loop.bind(this));
    }
    loop(time){
      this.data = this.data.filter(({beginTime,duration,fn}) => {
         const end = time - beginTime >= duration;
         if(end) {
           fn()
         }
         else return true
      })
      this.data.length && requestAnimationFrame(this.loop.bind(this))
    }

    }
    new Timer([
    {duration : 10500, fn : ()=> console.log('test1')},
    {duration : 14500, fn : ()=> console.log('test3')},
    {duration : 15000, fn : ()=> console.log('test')},
    ])