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.
Try
it yourself: Center aligned heading
Attributes Example 2:
<body> defines the body of an HTML document.
<body bgcolor="yellow"> has additional
information about the background color.
Try
it yourself: 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'
