HTML5 Pocket Reference, 5th Edition

Name

script

Synopsis

<script> . . . </script>

Places a script in the document (usually JavaScript for web documents). It may appear any number of times in the head or body of the document. The script may be provided in the script element or in an external file (by providing the src attribute).

Notes

In XHTML, when the script is provided as the content of the script element (i.e., not as an external file), the script should be contained in a CDATA section, as shown in the example below.

Usage

Categories:

Metadata content, flow content, phrasing content

Permitted contexts:

Where metadata or phrasing content is expected

Permitted content:

If there is no src attribute, the content model depends on the type attribute. If there is a src attribute, the element must be either empty or contain only script documentation.

Start/end tags:

Required/Required

Attributes

HTML5 Global Attributes

async (async="async" in XHTML)

Not in HTML 4.01. Indicates an external script should be executed asynchronously, as soon as it is available.

charset="character set"

Indicates the character encoding of an external script document (it is not relevant to the content of the script element).

crossorigin="anonymous|use-credentials"

Not in HTML 4.01. For sites that allow scripts from other domains, this attribute determines whether error information for scripts from other origins will be exposed.

defer (defer="defer" in XHTML)

Indicates to the user agent that an external script should be executed once the page is finished parsing.

src=" ...