GitHub

Community guides for open source creators

A modal dialog that's opened with a <details> button.

Drag and drop task list items.

An input element that validates its value with a server endpoint.

A window.fetch JavaScript polyfill.

An opinionated collection of ESLint shared configs and rules used by GitHub.

Multiple checkbox selection helper.

GitHub.com's Babel configuration

Auto-complete input values from server search results.

Install a shortcut to append selected text to a <textarea> as a Markdown quote.

Attach combobox navigation behavior to <input> or <textarea>.

Global DOM element activation

Paste spreadsheet cells as a Markdown table.

Backports native emoji characters to browsers that don't support them by replacing the characters with fallback images.

Annotate fields to be persisted on navigation away from the current page

Copy element text content or input values to the clipboard.

A Client Side Includes tag

A custom element for cropping a square image. Returns x, y, width, and height.

Web component extensions to the standard <time> element.

Markdown formatting buttons for text inputs.

A menu opened with a <details> button.

Tab container

Boilerplate for creating a custom element.

An opinionated webpack config for GitHub apps.

Crawl a website and run it through Google lighthouse

MySQL-backed datastore for use with Hubot

Polyfills EventListener behaviours from IE11 onward