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Web Platform Baseline Status Breakdown Total Features: 1219
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Categories: All CSS (102) HTML elements (100) Selectors (46) JavaScript (43) Forms (42)
WebGL extensions (37) Text (26) WebAssembly (22) Media queries (21) Scrolling (20) Fonts (19) Performance (19) Arrays (17) Layout (17) HTML (16) Progressive web app (15) Typed arrays (14) Units (14) Canvas (13) Color types (13) Strings (13) Background (12) Media elements (12) Security (12) Animation (11) Clipping, shapes, and masking (11) Web components (11) WebXR (11) Typographic font features (10) DOM (9) Internationalization (9) Iterators (9) Reporting (9) Text wrap (9) Workers (9) Clipboard (8) CSS object models (7) Containment (7) Fetch (7) JavaScript modules (7) Print media (7) Sensors (7) Container queries (6) Explicit defaults (6) Image formats (6) Landmark elements (6) Multi-column (6) Positioning (6) Promises (6) SVG (6) Storage (6) Streams (6) Credential management (5) Custom elements (5) Font synthesis (5) HTTP (5) Lists (5) Messaging (5) Resource hints (5) Ruby (5) Selection (5) Speech (5) Transitions (CSS) (5) View transitions (5) Web audio (5) WebGL (5) Anchor positioning (4) Cookies (4) Counters (4) File system access (4) Flexbox (4) Gamepad (4) Grid (4) Images (4) Primitive types (4) Regular expressions (4) WebDriver (4) WebRTC (4) Blend mode (3) Borders and outlines (3) Geolocation (3) Gradients (3) Image scaling (3) JSON (3) Maps (3) MathML (3) Payments (3) Reading order (3) Scroll markers (3) Transforms (3) WebAuthn (3) WebGPU (3) White space (3) Worklets (3) XML (3) Collections (2) Compute pressure (2) IndexedDB (2) Parsing and serialization (2) Resource integrity (2) Sets (2) Text fragments (2) WebMCP (2) CSS environment variables (1)
Years: All 2018
Showing 3 of 3 features

2018

1 features
• October 2018
Widely Available

The tabindex HTML attribute make an element focusable, and sets the element's relative ordering for sequential focus navigation.

Chrome 1
Firefox 1.5
Safari 3.1
Edge 18
Baseline Date: Oct 2, 2018

Limited Availability

2 features
• In Progress / Not Yet Baseline
Limited

The reading-flow CSS property sets the order in which flex or grid elements are rendered to speech or reached via focus navigation. The reading-order property overrides this order.

Chrome 137
Firefox —
Safari —
Edge 137
Status: Incomplete cross-engine support
Limited

The focusgroup global HTML attribute combines descendant elements into a single tab stop, with arrow-key navigation between them, for toolbars, tabs, menus, radio groups, and other composite controls. It's an alternative to the sequential navigation of tabindex.

Chrome —
Firefox —
Safari —
Edge —
Status: Incomplete cross-engine support