HTML 4.01 and XHTML 1.0 Reference: <base> Tag

HTML <base> Tag - Base URL
Syntax	HTML syntax - This element does not require a closing tag. <base> XHTML syntax - This element is opened and closed, within a single tag, by adding a space followed by a forward slash at the end of the tag. <base />
Usage	The <base> tag is used to specify a base URL for a web page document. This allows other URLs in the document to use relative addresses that are relative to the base URL. The <base> tag is placed in the head section of the document before any references to it. The href attribute holds the base URL. HTML <base> tag example. <head> <title>HTML Test</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <base href="http://www.littlewebhut.com"> </head> XHTML <base> tag example. <head> <title>HTML Test</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <base href="http://www.littlewebhut.com" /> </head>
Content Model	The <base> element cannot contain any tags.

Red attributes have been deprecated

<base> Tag Attribute Summary
Required	Tag Specific	Core	Focus	Events	Language
href	target	id¹
Notes: 1. XHTML only.

Red attributes have been deprecated

<base> Tag Attributes
Attribute	Description
href	The href attribute holds the base URL for the document. HTML <base> example using the href attribute. <head> <title>HTML Test</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <base href="http://www.littlewebhut.com"> </head> XHTML <base> example using the href attribute. <head> <title>HTML Test</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <base href="http://www.littlewebhut.com" /> </head> Note: This is a required attribute.
target	The target attribute specifies a default target window for the links within the current document. HTML <base> example using the target attribute to open all links in a new tab or window. <head> <title>HTML Test</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <base href="http://www.littlewebhut.com" target="_blank"> </head> XHTML <base> example using the target attribute to open all links in a new tab or window. <head> <title>HTML Test</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <base href="http://www.littlewebhut.com" target="_blank" /> </head> HTML <base> example that will open all links in an iframe pointed to by the target attribute. <head> <title>HTML Test</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <base href="http://www.littlewebhut.com" target="sample1"> </head> <body> <p> Open web page in an iframe by <a href="/html/">clicking here.</a> <iframe id="sample1" name="sample1" height="50%" width="100%" title="sample"></iframe> </p> </body> XHTML <base> example that will open all links in an iframe pointed to by the target attribute. <head> <title>HTML Test</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <base href="http://www.littlewebhut.com" target="sample1" /> </head> <body> <p> Open web page in an iframe by <a href="/html/">clicking here.</a> <iframe id="sample1" name="sample1" height="50%" width="100%" title="sample"></iframe> </p> </body> Note: This attribute has been deprecated.
id	The id attribute assigns a unique name to a tag. This allows style sheets or scripts to reference the tag. See id Example Note: XHTML only.

<base> Tag Attributes

Attribute

Description

href

The href attribute holds the base URL for the document.

HTML <base> example using the href attribute.

<head>
 <title>HTML Test</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <base href="http://www.littlewebhut.com">
</head>

XHTML <base> example using the href attribute.

<head>
 <title>HTML Test</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <base href="http://www.littlewebhut.com" />
</head>

Note: This is a required attribute.

target

The target attribute specifies a default target window for the links within the current document.

HTML <base> example using the target attribute to open all links in a new tab or window.

<head>
 <title>HTML Test</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <base href="http://www.littlewebhut.com" target="_blank">
</head>

XHTML <base> example using the target attribute to open all links in a new tab or window.

<head>
 <title>HTML Test</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <base href="http://www.littlewebhut.com" target="_blank" />
</head>

HTML <base> example that will open all links in an iframe pointed to by the target attribute.

<head>
 <title>HTML Test</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <base href="http://www.littlewebhut.com" target="sample1">
</head>

<body>
<p>
 Open web page in an iframe by <a href="/html/">clicking here.</a>
 <iframe id="sample1" name="sample1" height="50%" width="100%" title="sample"></iframe>
</p>
</body>

XHTML <base> example that will open all links in an iframe pointed to by the target attribute.

<head>
 <title>HTML Test</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <base href="http://www.littlewebhut.com" target="sample1" />
</head>

<body>
<p>
 Open web page in an iframe by <a href="/html/">clicking here.</a>
 <iframe id="sample1" name="sample1" height="50%" width="100%" title="sample"></iframe>
</p>
</body>

Note: This attribute has been deprecated.

The id attribute assigns a unique name to a tag. This allows style sheets or scripts to reference the tag. See id Example

Note: XHTML only.

HTML <base> Tag Examples
<base> tag example. <base> example using the target attribute to open all links in a new tab or window. <base> example that will open all links in an iframe pointed to by the target attribute.