2024-03-14
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#vanilla javascript
David Herbert
103328
Mar 14, 2024 ⋅ 12 min read

Build an image carousel from scratch with vanilla JavaScript

David Herbert David is a frontend developer by day and a technical writer by night who enjoys breaking down complex topics into comprehensible bits, digestible even by five-year-olds.

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7 Replies to "Build an image carousel from scratch with vanilla JavaScript"

  1. Useful tutorial! Thanks for sharing. One issue I had is:

    else {
    curSlide-;
    }”

    Should be:

    else {
    curSlide–;
    }”

    Other than that, fantastic job!

  2. nice thanks for sharing
    should have two – on the prev button else statement to fix the issue.
    else {
    curside–;
    }

  3. The following JS script fixes the above issues.

    document.addEventListener(“DOMContentLoaded”, function () {
    // Select all slides
    const slides = document.querySelectorAll(“.slide”);

    // Initialize current slide counter
    let curSlide = 0;

    // Add event listeners for next and previous slide buttons
    const nextSlideBtn = document.querySelector(“.btn-next”);
    const prevSlideBtn = document.querySelector(“.btn-prev”);

    nextSlideBtn.addEventListener(“click”, () => navigateSlides(1));
    prevSlideBtn.addEventListener(“click”, () => navigateSlides(-1));

    // Function to navigate slides
    function navigateSlides(offset) {
    curSlide = (curSlide + offset + slides.length) % slides.length;

    slides.forEach((slide, index) => {
    const translateValue = (index – curSlide) * 100;
    slide.style.transform = `translateX(${translateValue}%)`;
    });
    }
    });

  4. I was able to get it to work with this code:

    const slides = document.querySelectorAll(“.slide”);

    slides.forEach((slide, indx) => {
    slide.style.transform = `translateX(${indx * 100}%)`;
    });

    let curSlide = 0;

    let maxSlide = slides.length – 1;

    const nextSlide = document.querySelector(“.btn-next”);

    nextSlide.addEventListener(“click”, function () {
    if (curSlide === maxSlide) {
    curSlide = 0;
    } else {
    curSlide ++;
    }
    slides.forEach((slide, indx) => {
    slide.style.transform = `translateX(${100 * (indx – curSlide)}%)`;
    });
    });

    const prevSlide = document.querySelector(“.btn-prev”);

    prevSlide.addEventListener(“click”, function () {
    if (curSlide === 0) {
    curSlide = maxSlide;
    } else {
    curSlide –;
    }

    slides.forEach((slide, indx) => {
    slide.style.transform = `translateX(${100 * (indx – curSlide)}%)`;
    });
    });

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