Web Platform Baseline Status Breakdown
Total Features: 1219
Categories:
All
CSS (9)
Media queries (5)
Canvas (4)
Selectors (4)
Color types (3)
Font synthesis (3)
Units (3)
Clipping, shapes, and masking (2)
Counters (2)
Performance (2)
Storage (2)
Workers (2)
Animation (1)
Arrays (1)
Container queries (1)
Containment (1)
Custom elements (1)
File system access (1)
Fonts (1)
Forms (1)
Grid (1)
HTML (1)
HTML elements (1)
JavaScript modules (1)
MathML (1)
Media elements (1)
Messaging (1)
Print media (1)
Security (1)
Sensors (1)
Strings (1)
Text wrap (1)
Typed arrays (1)
Web components (1)
WebAssembly (1)
WebAuthn (1)
WebRTC (1)
2023
1 features
• October 2023
Widely Available
The isWellFormed() method of strings returns a boolean indicating if the string contains any Unicode lone surrogates. The toWellFormed() method returns a new string where all lone surrogates are replaced by the Unicode replacement character.
Chrome
111
Firefox
119
Safari
16.4
Edge
111
Baseline Date: Oct 24, 2023