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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.
To demonstrate specificity Inheritance Inheritance is a key feature in CSS; it relies on the ancestor-descendant relationship to operate. Inheritance is the mechanism by which properties are applied not only to a specified element but also to its descendants. Inheritance relies on the document tree, which is the hierarchy of XHTML elements in a page based on nesting. Descendant elements may ...
To emulate a flash of unstyled content, developers can use browser add-ons that are capable of disabling a web page's CSS on the fly. Firebug and Async CSS are such add-ons. Other techniques include manually stopping a page from completing the loading of CSS components. Another option entails using script-blocking tools.
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.
A tutorial on the CSS box model; Tantek Çelik's description of the "box model hack" Getting Internet Explorer to Play Well with CSS – article on about.com that outlines various ways to get around box model problem and other IE bugs. Cascading Style Sheet Compatibility in Internet Explorer 7 – MSDN article, July 2006.
Lazy evaluation can also lead to reduction in memory footprint, since values are created when needed. [19] In practice, lazy evaluation may cause significant performance issues compared to eager evaluation. For example, on modern computer architectures, delaying a computation and performing it later is slower than performing it immediately.
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.
The first version of CSS HTML Validator was released in 1997 for Windows 95. The current version is 2025/v25.01 [2] (as of January 24, 2025) and is for Windows 10 and above, including Windows 11. A native macOS and Linux command line version (called htmlval) became available with version 23. There are currently three main editions of CSS HTML ...