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JS-DOM-Introduction.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
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<title>JS DOM Introduction</title>
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<body>
<hr />
<h3>The HTML DOM (Document Object Model)</h3>
<p>
When a web page is loaded, the browser creates
a <strong>D</strong>ocument <strong>O</strong>bject <strong>M</strong>odel
of the page.
</p>
<p>
The <strong>HTML DOM</strong> model is constructed as a tree
of <strong>Objects</strong>:<br />
<br />
With the object model, JavaScript gets all the power it needs to create
dynamic HTML:
</p>
<ul>
<li>JavaScript can change all the HTML elements in the page</li>
<li>JavaScript can change all the HTML attributes in the page</li>
<li>JavaScript can change all the CSS styles in the page</li>
<li>JavaScript can remove existing HTML elements and attributes</li>
<li>JavaScript can add new HTML elements and attributes</li>
<li>JavaScript can react to all existing HTML events in the page</li>
<li>JavaScript can create new HTML events in the page</li>
</ul>
<h3>What is the DOM?</h3>
<p>The DOM is a W3C (World Wide Web Consortium) standard.</p>
<p>The DOM defines a standard for accessing documents:</p>
<p>
<em
>"The W3C Document Object Model (DOM) is a platform and language-neutral
interface that allows programs and scripts to dynamically access and
update the content, structure, and style of a document."</em
>
</p>
<p>The W3C DOM standard is separated into 3 different parts:</p>
<ul>
<li>Core DOM - standard model for all document types</li>
<li>XML DOM - standard model for XML documents</li>
<li>HTML DOM - standard model for HTML documents</li>
</ul>
<h3>What is the HTML DOM?</h3>
<p>
The HTML DOM is a standard <strong>object</strong> model
and <strong>programming interface</strong> for HTML. It defines:
</p>
<ul>
<li>
<p>The HTML elements as <strong>objects</strong></p>
</li>
<li>
<p>The <strong>properties</strong> of all HTML elements</p>
</li>
<li>
<p>
The <strong>methods</strong> to access all HTML elements
</p>
</li>
<li>
<p>The <strong>events</strong> for all HTML elements</p>
</li>
</ul>
<hr />
</body>
</html>