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<script>: type attribute

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

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.

importmap

This 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.

module

This value causes the code to be treated as a JavaScript module. The processing of the script contents is deferred. The charset and defer attributes have no effect. For information on using module, see our JavaScript modules guide. Unlike classic scripts, module scripts require the use of the CORS protocol for cross-origin fetching.

speculationrules Experimental

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 src attribute.

Note: In earlier browsers, the type identified the scripting language of the embedded or imported (via the src attribute) code.

Specifications

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

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
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
61Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 717643.
79Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 717643.
16–79
60 No
48Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 717643.
10.1Module scripts do not load when the page is served as XHTML (application/xhtml+xml).
61Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 717643.
61Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 717643.
60
45Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 717643.
10.3Module scripts do not load when the page is served as XHTML (application/xhtml+xml).
8.0Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 717643.
speculationrules 109
105Initial support included same-origin prerendering only.
109
105Initial support included same-origin prerendering only.
No No 95
91Initial support included same-origin prerendering only.
No 109
103Initial support included same-origin prerendering only.
109
103Initial support included same-origin prerendering only.
No 74
71Initial support included same-origin prerendering only.
No 21.0
20.0Initial support included same-origin prerendering only.

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https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script/type