Tips for implementing lazy loading with an owl carousel featuring background images

Is there a way to add lazy loading to a semi custom owl carousel that uses background images instead of regular img tags? I've tried using Owl carousel's function for lazy loading but it doesn't seem to work. How can I achieve this?

This is how my slider looks like:

//  content articles
$slider             = "SELECT * FROM `web_content` WHERE catid = 10 AND state = 1 AND featured = 1 ORDER BY ordering";
$slidercon          = $conn->query($slider);
$slidercr           = array();
while ($slidercr[]  = $slidercon->fetch_array());
?>
<!-- Home - Slider -->
<!-- ++++++++++++++++++++++++++++++++++++++++ -->

<!-- The rest of the code -->

And here is my carousel code snippet:

$(document).ready(function() {
var old = '';
function setOld(){
        setTimeout(function(){
            old = $(".center").find('.item').data("src");
            $(old).fadeIn('1000');
        },50)
}

// Carousel initialization and settings

I am considering using either this plugin or Owl carousel's built-in lazy loading function (found here). Which option would be more suitable in this case? Simply adding lazyLoad: true, does not seem to work as expected.

Answer №1

While working on a similar project to what you're attempting, I encountered some challenges that I was able to overcome by following the guidelines provided in the Owl Carousel 2 documentation.

The LazyLoad HTML structure necessitates the use of class="owl-lazy" and data-src="url_to_img" or/and data-src-retina="url_to_highres_img". If these settings are applied to a DOM element other than 'img', Owl will load the image as an inline background style using CSS.

To address this issue, I structured my carousel elements using div tags and specified the data source for the image URL retrieved from the database. By manipulating it with CSS and media queries, I managed to ensure proper functionality across various browsers.

Here is an example of how I implemented this:

HTML:

<div class="owl-carousel owl-theme">
<div class="slide-item owl-lazy" data-src="https://placehold.it/350x250&text=3"></div>
<div class="slide-item owl-lazy" data-src="https://placehold.it/350x250&text=3"></div>
</div>

CSS:

.slide-item{ position: relative;
background-repeat: no-   repeat;
background-position: top center;background-size: cover;}

CSS Media Queries:

@media screen and (max-width: 39.9375em) {
.slide-item{min-height: 280px;background-position: center;    background-size: cover;} }
@media screen and (min-width: 40em) {
.slide-item{ height: 360px; min-height: 360px;} }
@media screen and (min-width: 64em) {
.slide-item{ height: 600px; min-height: 600px;}}

JS:

$('.owl-carousel').owlCarousel(
{
    lazyLoad:true,
    items:1,
    autoplay: true,
    smartSpeed: 1500,
    nav:false,
    dots: true,
    loop : true,
    animateOut: "fadeOut"
  }
);

For more information, refer to:

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