<script>: type attribute #
::: section-content
The type attribute of the
<script> element indicates
the type of script represented by the element: a classic script, an
import map, a JavaScript module, speculation rules, or a data block.
:::
Value #
::: section-content The value of this attribute indicates the type of data represented by the script, and will be one of the following:
- Attribute is not set (default), an empty string, or a JavaScript MIME type
Indicates that the script is a "classic script", containing JavaScript code. Authors are encouraged to omit the attribute if the script refers to JavaScript code rather than specify a MIME type. JavaScript MIME types are listed in the IANA media types specification.
importmapThis value indicates that the body of the element contains an import map. The import map is a JSON object that developers can use to control how the browser resolves module specifiers when importing JavaScript modules.
moduleThis value causes the code to be treated as a JavaScript module. The processing of the script contents is deferred. The
charsetanddeferattributes have no effect. For information on usingmodule, see our JavaScript modules guide. Unlike classic scripts, module scripts require the use of the CORS protocol for cross-origin fetching.speculationrules[Experimental]{.visually-hidden}This value indicates that the body of the element contains speculation rules. Speculation rules take the form of a JSON object that determine what resources should be prefetched or prerendered by the browser. This is part of the speculation rules API.
- Any other value
The embedded content is treated as a data block, and won't be processed by the browser. Developers must use a valid MIME type that is not a JavaScript MIME type to denote data blocks. All of the other attributes will be ignored, including the
srcattribute.
::: {#sect1 .notecard .note}
Note: In earlier browsers, the type identified the scripting
language of the embedded or imported (via the src attribute) code.
:::
:::
Specifications #
::: {.notecard .warning} No specification found
No specification data found for html.elements.script.type.
Check for problems with this page or contribute a missing
spec_url to
mdn/browser-compat-data.
Also make sure the specification is included in
w3c/browser-specs.
:::
Browser compatibility #
::: _table #
Desktop Mobile
Chrome Edge Firefox Internet Opera Safari WebView Android Chrome Android Firefox Opera Android Safari on IOS Samsung Internet
Explorer for
Android
type 1 12 1 Yes 15 ≤4 4.4 18 4 14 ≤3.2 1.0
importmap 89 89 108 No 75 16.4 89 89 108 63 16.4 15.0
module 61 79 60 No 48 10.1 61 61 60 45 10.3 8.0
Module scripts without the `async` Module scripts without the `async` Module scripts without the `async` Module scripts do not load Module scripts without the `async` Module scripts without the `async` Module scripts without the `async` Module scripts do not load Module scripts without the `async`
attribute do not load when the page attribute do not load when the page attribute do not load when the page when the page is served as attribute do not load when the page attribute do not load when the page attribute do not load when the page when the page is served as attribute do not load when the page
is served as XHTML is served as XHTML is served as XHTML XHTML is served as XHTML is served as XHTML is served as XHTML XHTML is served as XHTML
(`application/xhtml+xml`). See [bug (`application/xhtml+xml`). See [bug (`application/xhtml+xml`). See [bug (`application/xhtml+xml`). (`application/xhtml+xml`). See [bug (`application/xhtml+xml`). See [bug (`application/xhtml+xml`). See [bug (`application/xhtml+xml`). (`application/xhtml+xml`). See [bug
717643](https://crbug.com/717643). 717643](https://crbug.com/717643). 717643](https://crbug.com/717643). 717643](https://crbug.com/717643). 717643](https://crbug.com/717643). 717643](https://crbug.com/717643). 717643](https://crbug.com/717643).
16--79
speculationrules 109 109 No No 95 No 109 109 No 74 No 21.0
105 105 91 103 103 71 20.0
Initial support included same-origin Initial support included same-origin Initial support included same-origin Initial support included same-origin Initial support included same-origin Initial support included same-origin Initial support included same-origin
prerendering only. prerendering only. prerendering only. prerendering only. prerendering only. prerendering only. prerendering only.
:::
::: _attribution
© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5
or later.
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script/type{._attribution-link}
:::