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The Document Object Model (DOM) is a cross-platform and language-independent interface that treats an HTML or XML document as a tree structure wherein each node is an object representing a part of the document. The DOM represents a document with a logical tree. Each branch of the tree ends in a node, and each node contains objects.
For example, the Document Object Model (DOM) is a collection of objects that represent a page in a web browser, used by script programs to examine and dynamically change the page. There is a Microsoft Excel object model [1] for controlling Microsoft Excel from another program, and the ASCOM Telescope Driver is an object model for controlling an ...
DOM (Document Object Model) Events are a signal that something has occurred, or is occurring, and can be triggered by user interactions or by the browser. [1] Client-side scripting languages like JavaScript , JScript , VBScript , and Java can register various event handlers or listeners on the element nodes inside a DOM tree, such as in HTML ...
An object hierarchy is a concept from computer programming. It references descendants of objects acting as properties of an object. An example of this would be the object controlling a window (at the top of the hierarchy) having another object like the window's border acting as a property of the window. [1]
C. C (programming language) C dynamic memory allocation; C file input/output; C syntax; C data types; C23 (C standard revision) Callback (computer programming) CIE 1931 color space; Coalesced hashing; Code injection; Comment (computer programming) Composite data type; Conditional (computer programming) Const (computer programming) Constant ...
It is part of a larger collection of objects that the browser makes use of. This collection of browser objects is collectively known as the Browser Object Model, or BOM. [3] The top level of the hierarchy is the window object, which contains the information about the window displaying the document. Some of its fields are objects themselves that ...
It should be possible to define a new operation for (some) classes of an object structure without changing the classes. When new operations are needed frequently and the object structure consists of many unrelated classes, it's inflexible to add new subclasses each time a new operation is required because "[..] distributing all these operations across the various node classes leads to a system ...
The design of an application must take this into account so that objects are not left orphaned. Objects may also be left with active reference counts if the COM "event sink" model is used. Since the object that fires the event needs a reference to the object reacting to the event, the latter's reference count will never reach zero.