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JavaScript HTML DOM


With the HTML DOM, JavaScript can access and change every one of the components of a HTML document.


The HTML DOM (Document Object Model)

When a site page is stacked, the program makes a Document Object Model of the page.

The HTML DOM show is developed as a tree of Objects:

The HTML DOM Tree of Objects

DOM HTML tree

With the item display, JavaScript gets all the power it needs to make dynamic HTML:

  • JavaScript can change all the HTML components in the page
  • JavaScript can change all the HTML characteristics in the page
  • JavaScript can change all the CSS styles in the page
  • JavaScript can expel existing HTML components and attributes
  • JavaScript can include new HTML components and attributes
  • JavaScript can respond to all current HTML occasions in the page
  • JavaScript can make new HTML occasions in the page

What You Will Learn

In the following sections of this instructional exercise you will learn:

  • How to change the substance of HTML elements
  • How to change the style (CSS) of HTML elements
  • How to respond to HTML DOM events
  • How to include and erase HTML elements

What is the DOM?

The DOM is a W3C (World Wide Web Consortium) standard.

The DOM characterizes a standard for getting to documents:

"The W3C Document Object Model (DOM) is a stage and language-impartial interface that enables projects and contents to powerfully access and refresh the substance, structure, and style of a document."

The W3C DOM standard is isolated into 3 diverse parts:

  • Core DOM - standard model for all record types
  • XML DOM - standard model for XML documents
  • HTML DOM - standard model for HTML documents

What is the HTML DOM?

The HTML DOM is a standard object show and programming interface for HTML. It defines:

  • The HTML components as objects
  • The properties of all HTML elements
  • The methods to get to all HTML elements
  • The events for all HTML elements

In other words: The HTML DOM is a standard for how to get, change, include, or erase HTML elements.