MVC

!function(){
  var view = document.querySelector('#mySlides')
  var controller = {
    view: null, 
    swiper: null,
    swiperOptions: { loop: true, pagination: { el: '.swiper-pagination', }, navigation: { nextEl: '.swiper-button-next', prevEl: '.swiper-button-prev', }, },
    init: function(view){
      this.view = view
      this.initSwiper()
    },
    initSwiper: function(){
      this.swiper = new Swiper (
        this.view.querySelector('.swiper-container'), 
        this.swiperOptions
      )
    }
  }

  controller.init(view)

}.call()