The mdn-data npm package provides structured data from MDN Web Docs in a programmable format. It includes data on CSS, HTML, and JavaScript, among other web standards, making it a valuable resource for developers looking to integrate web standards documentation into their projects or tools.
Accessing CSS property data
This feature allows you to access detailed information about CSS properties, such as the 'color' property. The data includes syntax, initial values, and more, useful for building CSS-related tools or documentation generators.
{"const mdnData = require('mdn-data'); console.log(mdnData.css.properties.color);"}Retrieving HTML element information
With this feature, you can retrieve information about HTML elements, like the anchor ('a') element. This includes attributes, permitted content, and more, which can be used in HTML documentation tools or editors.
{"const mdnData = require('mdn-data'); console.log(mdnData.html.elements.a);"}Getting JavaScript object data
This allows access to information on JavaScript built-in objects, such as 'Promise'. The data covers methods, properties, and usage, beneficial for creating JS documentation or educational tools.
{"const mdnData = require('mdn-data'); console.log(mdnData.javascript.builtins.Promise);"}Provides browser support data for web technologies from Can I Use. While mdn-data offers structured documentation data, caniuse-api focuses on compatibility and browser support, making it complementary for web development insights.
Note We are in the process of deprecating the
mdn/datapackage in favor ofw3c/webref. If you depend on this project, let us know in our community GitHub discussions. Thank you.
This repository contains general data for Web technologies and is maintained by the MDN team at Mozilla.
The data in this repository is used in MDN Web Docs to build information boxes and sidebar navigation. External tools make use of this data as well, for example, the CSSTree CSS parser.
There's a top-level directory for each broad area covered: for example, api and css.
Inside each of these directories is one or more JSON files containing the data.
Contains data about Web APIs:
Contains data about:
For more information, see the CSS data documentation and the Updating CSS JSON DB guide.
The l10n folder contains localization strings that are used in the various json files throughout this repository.
If you find a problem, please file an issue.
We're very happy to accept contributions to this data. Please familiarize yourself with the schema for the data you're editing, and send us a pull request. See the CONTRIBUTING.md document for more information.
FAQs
Open Web data by the Mozilla Developer Network
The npm package mdn-data receives a total of 20,732,272 weekly downloads. As such, mdn-data popularity was classified as popular.
We found that mdn-data demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 7 open source maintainers collaborating on the project.
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