Description

HTML element <base> is used to specify a base UTL, which is being used for all relative URLs on an HTML document.

Only one <base> element is allowed on an HTML document.

The below table summarizes its usage.

Usage Details
Placement It must be included within the <head> element.
Contents It is an empty element.
Tags Only an opening tag is required.
Versions HTML 2, 3.2, 4, 4.01, 5

Syntax

<base href="URL">

Examples

In the below example, the URLs of the logo and favicon are resolved using the base URL.

<!DOCTYPE html>
<html lang="en">
<head>
    <!-- <base href="/"> -->
    <!-- <base href="/" target="_blank"> -->
    <base href="https://randomcodez.com/" target="_blank">
</head>
<body>
    <h1>HTML Base Element</h1>
    <p><a href="assets/logo/logo.png">Logo</a></p>
    <p><a href="assets/favicon/favicon.ico">Favicon</a></p>
    <p><a href="https://randomcodez.com">Website</a></p>
</body>
</html>

Attributes

The following table shows the list of supported and unsupported attributes for the <base> tag.

Attribute Type Details
Tag-Specific Attributes The tag <base> supports the below tag-specific attributes.
Global Attributes Like all other HTML tags, the tag <b> supports the HTML Global Attributes.
Event Attributes The tag <b> also supports the HTML Event Attributes.

Browser Compatibility

The tag <b> is supported in all modern browsers.

  • Google Chrome 1+
  • Internet Explorer or Edge 2+
  • Firefox 1+
  • Apple Safari 1+
  • Opera 4+

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