ksnk

let sel=$('.select-wrapper>#select');
if (sel.length>0){ // если структура уже обрамлена - сюда не попадем
  sel
    .wrap('<div class="select-inner"></div>' )
    .after('<ul class="dropdown-select">'+
       '<input type="text" placeholder="Найти" class="search" id="dropdown-search">'+
       '<div class="dropdown-block">'+
       '</div>'+
    '</ul>');
  let ddblock=$('.select-wrapper .dropdown-block');
	$('option', sel).each(function(){
		$('<li class="dropdown-select__item">'+$(this).text()+'</li>').appendTo(ddblock);
	}
  )
}

$(window).on('resize',()=>{
  let el=$('.nav-tab-scroll')[0];
  if(el.scrollWidth!=el.clientWidth){
    $(el).addClass('scroll');
  } else {
    $(el).removeClass('scroll');
  }})

function setMyTimer(_t, interval){
	_t.start=Date.now();
	_t.interval=_t.interval||interval;
	_t.log_interval=_t.log_interval || 1000;

	function log(){
		const diff=_t.interval - (Date.now() - _t.start);
		if(_t.log)_t.log(diff);
		if(diff>_t.log_interval)
			setTimeout(log,_t.log_interval);
		else {
			setTimeout(_t.main,diff<0?1:diff);
		}
	}

	setTimeout(log,_t.log_interval);
}

setMyTimer({
	main: ()=>console.log('test1'),
	log: (diff)=>console.log('1:осталось '+diff+' ms ')
//, interval : 1200000
//, log_interval: 500
}, 50000);

setMyTimer({
	main: ()=>console.log('test2'),
	log: (diff)=>console.log('2:осталось '+diff+' ms ')
//, interval : 1200000
//, log_interval: 500
}, 20000);
setMyTimer({
	main: ()=>console.log('test3'),
//	log: (diff)=>console.log('2:осталось '+diff+' ms ')
//, interval : 1200000
//, log_interval: 500
}, 5000);