How to Create a Lazy Image Loading Reveal with Vanilla JavaScript
đź“ť Description:
In this mini project, you’ll learn how to implement lazy image loading using pure JavaScript — no external libraries or frameworks required.
Instead of loading all images at once, this script delays the full-resolution image load until it’s ready, and then smoothly fades it in while removing a low-quality preview placeholder.
✨ What you'll learn: 1. Lazy loading logic using data-src 2. Preloading images with new Image() 3. Smooth transitions with onload and setTimeout 4. DOM manipulation to swap image sources and remove previews
This is a perfect lightweight solution for improving your website’s performance and user experience.
đź”– Tags (Hashtags): #javascript #lazyloading #webperformance #frontend #webdevelopment #vanillajs #html #css #dommanipulation #lazyload #images #programmingtutorial
đźš« Warning: Error: const wrapper = img.classest('img-wrapper'); Should be: const wrapper = img.closest('.img-wrapper');
đź”— Source code: https://keepsnip.com/source/how-to-create-a-lazy-image-loading-reveal-with-vanilla-javascript
🖼️ Image source:
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