Creating a dynamic Bootstrap 5 carousel with active class on the first item and indicators

I am curious to know how to create a dynamic Bootstrap 5 carousel. Specifically, I want to know how to display indicators dynamically and add an active class to the first item of the carousel.

In Bootstrap 4, it is done in the following way:

$('#main_carousel .carousel-item:first').addClass('active');
var myCarousel = $("#main_carousel");
myCarousel.append("<ol class='carousel-indicators d-none d-xl-flex'></ol>");
var indicators = $("#main_carousel .carousel-indicators");
myCarousel.find(".carousel-inner").children(".carousel-item").each(function(index) {
  (index === 0) ?
  indicators.append("<li data-target='#main_carousel' data-slide-to='"+index+"' class='active'></li>") :
  indicators.append("<li data-target='#main_carousel' data-slide-to='"+index+"'></li>");
});

Could someone please provide instructions on how to achieve this using vanilla JavaScript for Bootstrap 5?

Thank you in advance!

javascriptbootstrap-5vanilla-forums

Answer №1

If you're in search of a straightforward conversion from JQuery to Vanilla JS, consider using the following code snippet:

document.querySelector('#main_carousel .carousel-item').classList.add('active');

let my_carousel = document.getElementById('main_carousel');
my_carousel.innerHTML += "<ol class='carousel-indicators d-none d-xl-flex'></ol>";

let indicators = document.querySelectorAll('#main_carousel .carousel-indicators');
my_carousel.querySelectorAll('.carousel-inner .carousel-item').forEach((element, index) => {
    indicators.innerHTML += index === 0 ? "<li data-target='#main_carousel' data-slide-to='" + index + "' class='active'></li>" : "<li data-target='#main_carousel' data-slide-to='" + index + "'></li>";
});

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