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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.
FOUC when loading Wikipedia's main page. A flash of unstyled content (FOUC, or flash of unstyled text) [1] [2] is an instance where a web page appears briefly with the browser's default styles prior to loading an external CSS stylesheet, due to the web browser engine rendering the page before all information is retrieved. [3]
The lazy initialization technique allows us to do this in just O(m) operations, rather than spending O(m+n) operations to first initialize all array cells. The technique is simply to allocate a table V storing the pairs ( k i , v i ) in some arbitrary order, and to write for each i in the cell T [ k i ] the position in V where key k i is stored ...
This script and CSS makes the sidebar stay in the same position on the screen as you scroll. This may have undesirable side effects in Chrome; e.g., when viewing a page like the very common.css page you just edited to put this code in, the viewable content will become much shorter, and require vertical scrolling in a frame.
Lazy loading allows the specification of modules that should not be loaded into memory by default when a project is started. Module elements are only loaded as they are specifically requested. Read-Write modules allow module editing of a fragmented model.
A singleton implementation may use lazy initialization in which the instance is created when the static method is first invoked. In multithreaded programs, this can cause race conditions that result in the creation of multiple instances. The following Java 5+ example [6] is a thread-safe implementation, using lazy initialization with double ...
It makes use of CSS class names to identify each vCard property. Normal HTML markup and CSS styling can be used alongside the hCard class names without affecting the webpage's ability to be parsed by a hCard parser. h-card is the microformats2 update to hCard. MeCard is a variation of vCard made by NTT DoCoMo for smartphones using QR codes. It ...