HTML Elements
An HTML element is defined by a start tag, some content, and an
end tag.
HTML Elements
The HTML element is
everything from the start tag to the end tag:
<tagname>Content goes here...</tagname>
Examples of some HTML elements:
<h1>My First Heading</h1>
<p>My first paragraph.</p>
|
Start tag |
Element content |
End tag |
|
<h1> |
My First Heading |
</h1> |
|
<p> |
My first paragraph. |
</p> |
|
<br> |
none |
none |
Note: Some HTML elements have no content
(like the <br> element). These elements are called empty elements. Empty
elements do not have an end tag!
Nested HTML Elements
HTML elements can be nested (this means that elements can contain
other elements).
All HTML documents consist of nested HTML elements.
The following example contains four HTML elements (<html>, <body>, <h1> and <p>):
Example
<!DOCTYPE html>
<html>
<body>
<h1>My
First Heading</h1>
<p>My
first paragraph.</p>
</body>
</html>
Example
Explained
The <html> element is the root
element and it defines the whole HTML document.
It has a start tag <html> and
an end tag </html>.
Then, inside the <html> element
there is a <body> element:
<body>
<h1>My
First Heading</h1>
<p>My
first paragraph.</p>
</body>
The <body> element defines the
document's body.
It has a start tag <body> and
an end tag </body>.
Then, inside the <body> element
there are two other elements: <h1> and <p>:
<h1>My
First Heading</h1>
<p>My
first paragraph.</p>
The <h1> element defines a
heading.
It has a start tag <h1> and
an end tag </h1>:
<h1>My
First Heading</h1>
The <p> element defines a
paragraph.
It has a start tag <p> and
an end tag </p>:
<p>My
first paragraph.</p>
Never Skip the End Tag
Some HTML elements will display correctly, even if you forget the
end tag:
Example
<html>
<body>
<p>This
is a paragraph
<p>This
is a paragraph
</body>
</html>
However, never rely on this! Unexpected results and errors may
occur if you forget the end tag!
Empty HTML Elements
HTML elements with no content are called empty elements.
The <br> tag defines a line break,
and is an empty element without a closing tag:
Example
<p>This
is a <br> paragraph
with a line break.</p>
HTML is Not Case Sensitive
HTML tags are not case sensitive: <P> means
the same as <p>.
The HTML standard does not require lowercase tags, recommends lowercase
in HTML, and demands lowercase for stricter document types
like XHTML.
HTML Tag Reference
W3Schools' tag reference contains additional information about
these tags and their attributes.
|
Tag |
Description |
|
<html> |
Defines the root of an HTML
document |
|
<body> |
Defines the document's body |
|
<h1> to <h6> |
Defines HTML headings |
