Image Lazy Load

simple-image-lazy-load is a lightweight JavaScript library for lazy loading images and background images in web applications.

Installation

• You can install the package via npm:

npm install simple-image-lazy-load

Usage

1. Import the library: In your JavaScript file, import the lazyLoadImages function from the package.

const lazyLoadImages = require("simple-image-lazy-load");

1. Call the function: Use the lazyLoadImages function to lazy load images in your web application. You can provide optional configuration options to customize the lazy loading behavior.

document.addEventListener("DOMContentLoaded", function () {
  lazyLoadImages({
    selector: ".lazy-image",
    threshold: 0.5,
    rootMargin: "100px",
    onLoad: (element) => {
      console.log("Image loaded:", element);
    },
  });
});

Configuration Options

• selector (string, default: 'img.lazy'): CSS selector for lazy-loading elements.
• threshold (number, default: 0): Specifies the percentage of an element's visibility in the viewport at which lazy loading should occur.
• rootMargin (string, default: '0px'): Margin around the viewport boundary to trigger lazy loading earlier or later.
• onLoad (function, default: () => {}): Callback function to execute when an image is loaded.

HTML Markup

• In your HTML file, mark the images you want to lazy load with the lazy class and provide the actual image source in the data-src attribute.

<img
  class="lazy-image"
  data-src="path/to/your/image.jpg"
  alt="Lazy-loaded image"
/>

Example

• You can find an example usage of the simple-image-lazy-load package in the JS Fiddle.