The backgroundImage property sets or returns the background image of an element. Tip: In addition to the background-image you should also specify a background-color. The background-color will be used if the image is unavailable.

Feb 26, 2015 · Because background is a property of style of the object not a property of the object. You can do it in following ways. STEP 1. var imageUrl= "URL OF THE IMAGE HERE"; var BackgroundColor="RED"; // what ever color you want. For changing background of BODY.

Apr 30, 2024 · Changing a background image in JavaScript involves modifying the style property of an HTML element to update its backgroundImage property. This can be done by selecting the element and setting its style.backgroundImage property to the new image URL.

Jan 4, 2020 · Collection of 25+ JavaScript Background Effects. All items are 100% free and open-source. The list also includes change background color or image javascript background effects, and animated.

Jun 3, 2012 · Just set an onload function on the body: Then do something like this in javascript: var someimage = 'changableBackgroudImage'; document.body.style.background = 'url(img/'+someimage+'.png) no-repeat center center'

May 17, 2021 · When you want to change a webpage background image using JavaScript, you can do so by setting the background image of the document object model (DOM) property. The property you need to manipulate for changing the background image of the whole page is document.body.style.backgroundImage :

Oct 27, 2023 · Learn multiple ways to set a background image in HTML, CSS, and JavaScript. This comprehensive guide covers inline styles, CSS classes, external stylesheets, and dynamic image manipulation with JavaScript, with practical examples and best practices.

Mar 7, 2025 · When working with background images in JavaScript, keep the following best practices in mind: Use relative URLs for image sources to ensure compatibility across different environments. Optimize your images by compressing and resizing them to reduce file size.

Dec 5, 2021 · This post will discuss how to change the background image of a div with JavaScript/jQuery and CSS... In plain JavaScript, you can directly modify the `backgroundImage` CSS property of the image to set one or more background images on an element.

Nov 3, 2023 · Compress images and use next-gen formats like WebP when possible. Background images account for 25% of page weight on average. Lower image resolution on smaller screens that don‘t require huge assets. Enable native lazy loading for background images below the fold. Preload and cache background images to prevent network delays.