2024-03-14
3566
#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.

Recent posts:

React useEffectEvent: Goodbye to stale closure headaches

React useEffectEvent: Goodbye to stale closure headaches

Discover why the useEffectEvent Hook is important, how to use it effectively, and how it compares to useRef.

David Omotayo
Oct 17, 2025 ⋅ 5 min read
I Tried Shadcn CLI 3.0 — Here’s What I Learned

I tried Shadcn CLI 3.0 — here’s what I learned

Shadcn CLI 3.0 takes component management to a new level. With namespaced registries, private access, and AI-powered discovery, it’s now faster and smarter to build React UIs.

Emmanuel John
Oct 17, 2025 ⋅ 6 min read

Why is Zod so slow?

Zod’s flexibility comes at a cost. This article breaks down why Zod is slower than AOT-compiled validators like Typia, and how to fix it with a build-time optimization that brings production-grade performance.

Ikeh Akinyemi
Oct 16, 2025 ⋅ 5 min read
the replay oct 15 graphic

The Replay (10/15/25): AI’s accessibility problem, React 19.2, and more

Discover what’s new in The Replay, LogRocket’s newsletter for dev and engineering leaders, in the October 15th issue.

Matt MacCormack
Oct 15, 2025 ⋅ 34 sec read
View all posts

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)}%)`;
    });
    });

Leave a Reply

Hey there, want to help make our blog better?

Join LogRocket’s Content Advisory Board. You’ll help inform the type of content we create and get access to exclusive meetups, social accreditation, and swag.

Sign up now