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Lazy loading (also known as asynchronous loading) is a technique used in computer programming, especially web design and web development, to defer initialization of an object until it is needed. It can contribute to efficiency in the program's operation if properly and appropriately used.
This speeds up both the loading and rendering of web pages. Prefetching was first introduced in HTML5. Prefetching is accomplished through hints in web pages. These hints are used by the browser to prefetch links. Resources which can be prefetched include: JavaScript, CSS, image, audio, video, and web fonts.
Vector substitution is best suited for simple geometric images. [citation needed] Lazy loading of images and video reduces initial page load time, initial page weight, and system resource usage, all of which have positive impacts on website performance. [10] It is used to defer initialization of an object right until the point at which it is ...
In computer programming, lazy initialization is the tactic of delaying the creation of an object, the calculation of a value, or some other expensive process until the first time it is needed. It is a kind of lazy evaluation that refers specifically to the instantiation of objects or other resources.
In software engineering, the initialization-on-demand holder (design pattern) idiom is a lazy-loaded singleton. In all versions of Java, the idiom enables a safe, highly concurrent lazy initialization of static fields with good performance. [1] [2]
Website performance improvements. AMD implementations load smaller JavaScript files, and then only when they are needed. Fewer page errors. AMD implementations allow developers to define dependencies that must load before a module is executed, so the module does not try to use outside code that is not available yet.
President-elect Donald Trump speaks to members of the media following a meeting at the US Capitol on Jan. 8, 2025 in Washington, DC. Credit - Valerie Plesch—Bloomberg via Getty Images
JavaScript image viewers are either part of a hosted 360 image service or a standalone script. Hosted services work by uploading images to the service, from where they are served with the scripts. Upon upload, hosted services automatically create the spin, resize and optimise the images for fast loading. Image optimisation is of particular ...