Web Platform Baseline Status Breakdown
Total Features: 1219
Categories:
All
HTML elements (88)
CSS (52)
Selectors (33)
Forms (30)
JavaScript (27)
WebGL extensions (24)
Arrays (17)
Media queries (14)
Text (14)
Fonts (13)
Strings (12)
Typed arrays (12)
WebAssembly (12)
Units (10)
Background (9)
Color types (9)
Security (9)
Clipping, shapes, and masking (8)
Layout (8)
Canvas (7)
Containment (7)
HTML (7)
Internationalization (7)
Typographic font features (7)
Web components (7)
Animation (6)
Landmark elements (6)
Performance (6)
Positioning (6)
Explicit defaults (5)
Media elements (5)
Messaging (5)
Promises (5)
DOM (4)
Font synthesis (4)
HTTP (4)
Image formats (4)
Iterators (4)
Primitive types (4)
SVG (4)
Scrolling (4)
Text wrap (4)
Workers (4)
Blend mode (3)
Borders and outlines (3)
CSS object models (3)
Counters (3)
Grid (3)
Lists (3)
Multi-column (3)
Storage (3)
Transforms (3)
Transitions (CSS) (3)
Web audio (3)
WebRTC (3)
White space (3)
Collections (2)
Custom elements (2)
Fetch (2)
File system access (2)
Flexbox (2)
Gradients (2)
JavaScript modules (2)
Maps (2)
Parsing and serialization (2)
Print media (2)
Resource hints (2)
WebAuthn (2)
XML (2)
CSS environment variables (1)
Clipboard (1)
Container queries (1)
Cookies (1)
Credential management (1)
Gamepad (1)
Geolocation (1)
Image scaling (1)
Images (1)
IndexedDB (1)
JSON (1)
MathML (1)
Reading order (1)
Regular expressions (1)
Resource integrity (1)
Ruby (1)
Selection (1)
Sensors (1)
Sets (1)
Speech (1)
Streams (1)
WebGL (1)
Worklets (1)
2023
1 features
• June 2023
Widely Available
The Worker() constructor accepts { type: "module" } to load scripts that use import and export. Also known as ECMAScript modules or ESM in workers.
Chrome
80
Firefox
114
Safari
15
Edge
80
Baseline Date: Jun 6, 2023
2018
1 features
• May 2018
Widely Available
JavaScript modules allow code to be organized into reusable units. Modules use import to load other modules and export to declare what is available to import from other modules. In HTML, modules are loaded with <script type="module">.
Chrome
61
Firefox
60
Safari
11
Edge
16
Baseline Date: May 9, 2018