- Posted by lio on October 5, 2008
Attributes provide additional information to an HTML element.
HTML Tag Attributes
HTML
tags can have attributes. Attributes provide additional information to
an HTML element. Attributes always come in name/value pairs like this:
name="value".
Attributes are always specified in the start tag of an HTML element.
Attributes Example 1:
<h1> defines the start of a heading.
<h1 align="center"> has additional information about the alignment.
Attributes Example 2:
<body> defines the body of an HTML document.
<body bgcolor="yellow"> has additional information about the background color.
Attributes Example 3:
<table> defines an HTML table. (You will learn more about HTML tables later)
<table border="1"> has additional information about the border around the table.
Use Lowercase Attributes
Attributes
and attribute values are case-insensitive. However, the World Wide Web
Consortium (W3C) recommends lowercase attributes/attribute values in
their HTML 4 recommendation, and XHTML demands lowercase
attributes/attribute values.
Always Quote Attribute Values
Attribute
values should always be enclosed in quotes. Double style quotes are the
most common, but single style quotes are also allowed.
In some rare situations, like when the attribute value itself contains quotes, it is necessary to use single quotes:
name='John "ShotGun" Nelson'