Newly Available
Maps
id: getorinsert
Map getOrInsert()
The
getOrInsert() and getOrInsertComputed() methods of Map objects get a value, setting and getting a default value if needed.
Baseline Status:
Achieved Newly Available on Feb 14, 2026 across core engines.
Desktop Browser Engine Support
Google Chrome
145
Supported
Mozilla Firefox
144
Supported
Apple Safari
26.2
Supported
Microsoft Edge
145
Supported
Mobile Browser Engine Support
Chrome Android
145
Firefox Android
144
Safari iOS
26.2
Specifications and References