Widely Available
JavaScript
id: hashbang-comments
Hashbang comments
The
#! comment at the absolute start of a script or module is treated as a normal comment and is ignored by the JavaScript engine.
Baseline Status:
Achieved Widely Available on Sep 24, 2022 (Cross-browser Newly Available since Mar 24, 2020).
Desktop Browser Engine Support
Google Chrome
74
Supported
Mozilla Firefox
67
Supported
Apple Safari
13.1
Supported
Microsoft Edge
79
Supported
Mobile Browser Engine Support
Chrome Android
74
Firefox Android
67
Safari iOS
13.4
Specifications and References
MDN Browser Compat Data Keys: