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DOM HTML

HTML DOM allows JavaScript to access and change all the elements of an HTML document.

The HTML DOM (Document Object Model)

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.

html dom

With the object model, JavaScript gets all the power it needs to create dynamic HTML.JavaScript can alter all the HTML elements in the page.

  • JavaScript can alter all the HTML attributes in the page.
  • JavaScript can alter 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 in the page.

What is the DOM?

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

The DOM specifies a standard for accessing documents:

“The W3C Document Object Model (DOM) is a platform and language-neutral interface that enables programs and scripts to dynamically access and update the content, structure, and style of a document.”

The W3C DOM standard is divided into three different parts:

  • Core DOM – standard model for all document 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 model and programming interface for HTML. It defines:

  • The HTML elements as objects.
  • The properties of all HTML elementsd.
  • The methods to access all HTML elements.
  • The events for all HTML elements.
  • In other words: The HTML DOM is a standard for how to get, change, add, or delete HTML elements.