What is DOM element

Question

What  is the meaning of DOM element in the following statements   Statement  1     You can add multiple classes to a   single DOM element    Statement  2     The -- point is that inheritance in   CSS is done not through classes  but   through element hierarchies  So to   model inherited traits you need to   apply them to different levels of   elements in the DOM    I know that DOM stands for  Domain Object Model  It seems to be synonym to API in the statements

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If the statements are in the context of how CSS affects HTML then DOM element refers to an HTML element

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See that your statements refer to  elements of the DOM   which are things such as the HTML tags  A  INPUT  etc   Thse statements simply mean that multiple CSS classes may be assigned to one such element

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As per W3C  DOM permits programs and scripts to dynamically access and update the content  structure and style of XML or HTML documents   DOM is composed of    set of objects elements a structure of how these objects elements can be combined and an interface to access and modify them   cheers

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Document Object Model  DOM   a programming interface specification being developed by the World Wide Web Consortium  W3C   lets a programmer create and modify HTML pages and XML documents as full-fledged program objects

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DOM stands for Document Object Model  It is the W3C World Wide Web Consortium  Standard  It define standard for accessing and manipulating HTML and XML document and The elements of DOM is head title body tag etc  So the answer of your first statement is   Statement  1 You can add multiple classes to a single DOM element   Explanation    div class  cssclass1 cssclass2 cssclass3   Here  tag is element of DOM and i have applied multiple classes to DOM element

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Document object model  The DOM is the way Javascript sees its containing pages  data  It is an object that includes how the HTML XHTML XML is formatted  as well as the browser state     A DOM element is something like a DIV  HTML  BODY element on a page  You can add classes to all of these using CSS  or interact with them using JS

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DOM  Document Object Model  is a standard for accessing documents    When a web page is loaded  the browser creates a Document Object Model of the page    it s divided into 3 parts   - Core DOM - standard model for all document types - XML DOM - standard model for XML documents - HTML DOM - standard model for HTML documents   To learn more  see http   www w3schools com js js htmldom asp

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DOM is a logical model that can be implemented in any convenient manner It is based on an object structure that closely resembles the structure of the documents it models   For More Information on DOM   Click Here

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It s actually Document Object Model  HTML is used to build the DOM which is an in-memory representation of the page  while closely related to HTML  they are not exactly the same thing   Things like CSS and Javascript interact with the DOM

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When a web page is loaded  the browser creates a Document Object Model of the page  The HTML DOM model is constructed as a tree of Objects   With the object model  JavaScript gets all the power it needs to create dynamic HTML   JavaScript can change all the HTML elements in the page JavaScript can change all the HTML attributes in the page JavaScript can change all the CSS styles in the page JavaScript can remove existing HTML elements and attributes JavaScript can add new HTML elements and attributes JavaScript can react to all existing HTML events in the page JavaScript can create new HTML events on the page  source

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To find out concept of DOM element it is essential to understand concept of Dynamic HTML and DOM  Everything is started from the time that requirements of all  stockholders of web pages are enhanced  They wanted the Web pages that can be more interactive  dynamic and lively  In addition  to reach this goal  developers required the tools and mechanisms that via them the presentation and content of each section of web page can be modified or manipulated  Therefore the concept of Dynamic HTML is created  To understand it  a great definition for Dynamic HTML is accessible in Wikipedia       Dynamic HTML  or DHTML  is an umbrella term for a collection of   technologies used together to create interactive and animated websites   by using a combination of a static markup language  such as HTML   a   client-side scripting language  such as JavaScript   a presentation   definition language  such as CSS   and the Document Object Model    DOM      So  writing standard DHTML web pages are standardized in three fields  including client-side scripting language  such as JavaScript   a presentation definition language  such as CSS  and uniform programming interface API  to access and modify the Web page  Document Object Model   This activity is performed by W3C and others  Also to solve the problem of cross browser  W3C tried to reach a general consensus  with different browser vendors  about scripts to access and manipulate HTML and XML documents via Document Object Model  DOM  as a standard application programming interface  API    But the main question is that how they designed the structure of Document Object Model to meet their needs  Their solution was simple but wonderful  They used a hierarchical structure such as tree which at the root of the tree you can find document object  also each node is equivalent of a HTML elements  DOM element   This abstraction of your web page give you a great facility to access any HTML element  style sheets  and       To understand it better you can map each indent of your HTML code to each level of DOM tree  Please pay attention to this example   Your HTML    lt  DOCTYPE html gt   lt html gt       lt head gt       lt  head gt       lt body gt           lt p gt     lt  p gt           lt ul gt               lt li gt     lt  li gt           lt  ul gt           lt table gt               lt tr gt     lt  tr gt           lt  table gt       lt  body gt   lt  html gt     DOM Structure       document                       lt html gt                             lt head gt   lt body gt   styleSheets                        lt p gt   lt ul gt   lt table gt                            text     lt li gt      lt tr gt      So  each  node of this hierarchical structure  DOM tree  refers to a DOM element  To learn more use tis reference

[dom] What is DOM element?

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