Mettre en place du lazy loading sur les images

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Mettre en place du lazy loading sur les images

Mettre en place du lazy loading sur les images

Javascript, lozad.js
Développement front-end

Fichier index.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>NGLESSON.COM</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="keyword" content="Lazy Loading Images">
    <meta name="description" content="Lazy Loading Images">
    <meta name="author" content="Mezgani said">
    <meta name="copyright" content="NGLESSON">
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet">
    <style>
        .lozard{
            background: #F1F1FA;
            display: block;
            margin: 10px auto;
            border: 0;
            height: 300px;
            object-fit: cover;
            width: 100%;
        }
    </style>
</head>
<body class="container">
    <div class="row">
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
        <div class="col-4 mb-5">
            <img width="100%" height="auto" data-src="https://source.unsplash.com/random/" class="lozad img-fluid" loading="lazy">
        </div>
    </div>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/lozad/dist/lozad.min.js"></script>
    <script src="script.js"></script>
</body>
</html>

Fichier script.js

// Initialize library
const observer = lozad();
observer.observe();

Mettre en place du lazy loading sur les images

Fichier index.html

Fichier script.js

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