Slider

PHOTO

Sat Oct 01 2022 13:50:32 GMT+0000 (Coordinated Universal Time)

//HTML
<div class="slider">
        <div class="slide"><img src="img/img-1.jpg" alt="Photo 1" /></div>
        <div class="slide"><img src="img/img-2.jpg" alt="Photo 2" /></div>
        <div class="slide"><img src="img/img-3.jpg" alt="Photo 3" /></div>
        <div class="slide"><img src="img/img-4.jpg" alt="Photo 4" /></div> 
</div>


//CSS
/* SLIDER */
.slider {
  max-width: 100rem;
  height: 50rem;
  margin: 0 auto;
  position: relative;

  /* To hide unwanted .slide */
  overflow: hidden;
}

.slide {
  position: absolute;
  top: 0;
  width: 100%;
  height: 50rem;

  display: flex;
  align-items: center;
  justify-content: center;

  /* THIS creates the animation! */
  transition: transform 1s;
}


//JS
//Slider
const slides = document.querySelectorAll('.slide');
const btnLeft = document.querySelector('.slider__btn--left');
const btnRight = document.querySelector('.slider__btn--right');

// Set a current slide to begin with
let currentSlide = 0;
//Set a maximum number of slides else number will be infite
const maxSlide = slides.length;

const goToSlide = slide => {
  //Change position for each slide
  slides.forEach((s, i) => {
    //e. currentSlide 1: 100 * (0 - 1) = -100% each item slides left
    s.style.transform = `translateX(${100 * (i - slide)}%)`;
  });
};

//Show slide on position 0
goToSlide(0);

//Next slide
const nextSlide = () => {
  //Reset the value once we reach max
  currentSlide === maxSlide - 1
    ? (currentSlide = 0)
    : //Increase by one everytime we click 'next'
      currentSlide++;

  goToSlide(currentSlide);
};

const prevSlide = () => {
  //If it is in position 0 then by pressing prev go to the last slide
  currentSlide === 0 ? (currentSlide = maxSlide - 1) : currentSlide--;
  goToSlide(currentSlide);
};

btnRight.addEventListener('click', nextSlide);
btnLeft.addEventListener('click', prevSlide);

//Handle keyboar event left-right
document.addEventListener('keydown', function (e) {
  if (e.key === 'ArrowRight') nextSlide();
  //Also with short-circuting
  e.key === 'ArrowLeft' && nextSlide();
});

COPY

Navigate slider with arrows

https://www.udemy.com/course/the-complete-javascript-course/learn/lecture/22649001#questions

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