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:

Debugging with Chrome DevTools MCP: Giving AI eyes in the browser

Debugging with Chrome DevTools MCP: Giving AI eyes in the browser

Learn how to effectively debug with Chrome DevTools MCP server, which provides AI agents access to Chrome DevTools directly inside your favorite code editor.

Emmanuel John
Oct 21, 2025 ⋅ 6 min read
Goodbye, useState? Smarter state modeling for modern React apps

Goodbye, useState? Smarter state modeling for modern React apps

Ever opened a React file and found a graveyard of useState hooks? The problem isn’t React; it’s how we model state. Here’s how to do it smarter.

Oscar Jite-Orimiono
Oct 21, 2025 ⋅ 9 min read

Why third-party integrations break in React 19 — And how to future-proof them

React 19 breaks old third-party integrations. Learn why concurrent rendering exposes brittle SDKs and how to rebuild them with resilient modern patterns.

Peter Aideloje
Oct 20, 2025 ⋅ 4 min read
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
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