| CARVIEW |
Select Language
HTTP/2 301
content-length: 162
content-type: text/html
date: Thu, 16 Oct 2025 02:37:25 GMT
location: https://developer.mozilla.org/en-US/docs/Web/API/MathMLElement/attributeStyleMap
server: nginx
strict-transport-security: max-age=60; includeSubDomains
via: 1.1 google
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
HTTP/2 200
content-type: text/html
x-guploader-uploadid: AAwnv3IP-u5B9MyW7Q9zjezd1pOyJ3tgM2G6eIjci70pJ54guAXIOga0t1jhCB6n7d_Zg_f8
cache-control: public, max-age=3600
expires: Thu, 16 Oct 2025 03:37:26 GMT
last-modified: Thu, 16 Oct 2025 01:06:14 GMT
etag: W/"c9d1ae4521aa34a759c5d9c13ff37db1"
x-goog-generation: 1760576774167611
x-goog-metageneration: 1
x-goog-stored-content-encoding: identity
x-goog-stored-content-length: 140540
x-goog-meta-goog-reserved-file-mtime: 1760575316
x-goog-hash: crc32c=9NPrnQ==, md5=ydGuRSGqNKdZxdnBP/N9sQ==
x-goog-storage-class: STANDARD
accept-ranges: none
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
alt-svc: clear
referrer-policy: strict-origin-when-cross-origin
x-content-type-options: nosniff
strict-transport-security: max-age=63072000
content-security-policy: default-src 'self'; script-src 'report-sample' 'self' 'wasm-unsafe-eval' https://www.google-analytics.com/analytics.js https://www.googletagmanager.com/gtag/js assets.codepen.io production-assets.codepen.io https://js.stripe.com 'sha256-XNBp89FG76amD8BqrJzyflxOF9PaWPqPqvJfKZPCv7M=' 'sha256-YCNoU9DNiinACbd8n6UPyB/8vj0kXvhkOni9/06SuYw=' 'sha256-PZjP7OR6mBEtnvXIZfCZ5PuOlxoDF1LDZL8aj8c42rw='; script-src-elem 'report-sample' 'self' 'wasm-unsafe-eval' https://www.google-analytics.com/analytics.js https://www.googletagmanager.com/gtag/js assets.codepen.io production-assets.codepen.io https://js.stripe.com 'sha256-XNBp89FG76amD8BqrJzyflxOF9PaWPqPqvJfKZPCv7M=' 'sha256-YCNoU9DNiinACbd8n6UPyB/8vj0kXvhkOni9/06SuYw=' 'sha256-PZjP7OR6mBEtnvXIZfCZ5PuOlxoDF1LDZL8aj8c42rw='; style-src 'report-sample' 'self' 'unsafe-inline'; object-src 'none'; base-uri 'self'; connect-src 'self' developer.allizom.org bcd.developer.allizom.org bcd.developer.mozilla.org updates.developer.allizom.org updates.developer.mozilla.org https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://incoming.telemetry.mozilla.org https://observatory-api.mdn.allizom.net https://observatory-api.mdn.mozilla.net https://api.github.com/search/issues stats.g.doubleclick.net https://api.stripe.com; font-src 'self'; frame-src 'self' interactive-examples.mdn.mozilla.net interactive-examples.mdn.allizom.net mdn.github.io live-samples.mdn.mozilla.net live-samples.mdn.allizom.net *.mdnplay.dev *.mdnyalp.dev *.play.test.mdn.allizom.net https://v2.scrimba.com https://scrimba.com jsfiddle.net www.youtube-nocookie.com codepen.io survey.alchemer.com https://js.stripe.com; img-src 'self' data: *.githubusercontent.com *.googleusercontent.com *.gravatar.com mozillausercontent.com firefoxusercontent.com profile.stage.mozaws.net profile.accounts.firefox.com developer.mozilla.org mdn.dev interactive-examples.mdn.mozilla.net interactive-examples.mdn.allizom.net wikipedia.org upload.wikimedia.org https://mdn.github.io/shared-assets/ https://mdn.dev/ https://*.google-analytics.com https://*.googletagmanager.com www.gstatic.com; manifest-src 'self'; media-src 'self' archive.org videos.cdn.mozilla.net https://mdn.github.io/shared-assets/; child-src 'self'; worker-src 'self';
x-frame-options: DENY
origin-trial: AxVILwizhbMjxFeHOn1P3R8niO1RJY/smaK4B4d1rLzc1gTaxtXMSaTi+FoigYgCw40uFRDwFcEAeqDR+vVLOW4AAABfeyJvcmlnaW4iOiJodHRwczovL2RldmVsb3Blci5tb3ppbGxhLm9yZyIsImZlYXR1cmUiOiJQcml2YXRlQXR0cmlidXRpb25WMiIsImV4cGlyeSI6MTc0MjA3OTYwMH0=
x-cloud-trace-context: a8aff8a54e9e3b26f7e26557f8bcb36d
date: Thu, 16 Oct 2025 02:37:27 GMT
server: Google Frontend
via: 1.1 google
vary: Accept-Encoding
content-encoding: gzip
x-cache: miss
MathMLElement: attributeStyleMap property - Web APIs | MDN
Toggle sidebar
MathMLElement: attributeStyleMap property
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
The attributeStyleMap read-only property of the MathMLElement interface returns a live StylePropertyMap object that contains a list of style properties of the element that are defined in the element's inline style attribute, or assigned using the style property of the MathMLElement interface via script.
Shorthand properties are expanded. If you set border-top: 1px solid black, the longhand properties (border-top-color, border-top-style, and border-top-width) are set instead.
The main difference between style property and attributeStyleMap property is that, the style property will return a CSSStyleDeclaration object, while the attributeStyleMap property will return a StylePropertyMap object.
Though the property itself is not writable, you could read and write inline styles through the StylePropertyMap object that it returns, just like through the CSSStyleDeclaration object that returns via the style property.
Value
A live StylePropertyMap object.
Examples
The following code snippet shows the relationship between the style attribute and the attributeStyleMap property:
html
<math>
<mrow>
<mi>f</mi>
<mo stretchy="false">(</mo>
<mi id="el" style="border-top: 1px solid blue; color: red;">x</mi>
<mo stretchy="false">)</mo>
<mo>=</mo>
<mi>x</mi>
</mrow>
</math>
<div id="output"></div>
css
#el {
font-size: 16px;
}
#output {
white-space: pre-line;
}
js
const element = document.getElementById("el");
const output = document.getElementById("output");
for (const property of element.attributeStyleMap) {
output.textContent += `${property[0]} = ${property[1][0].toString()}\n`;
}
Specifications
| Specification |
|---|
| CSS Typed OM Level 1 # dom-elementcssinlinestyle-attributestylemap |
Browser compatibility
Loading…