BrowserCard

Resumable host functions

put fetchText("https://example.com", 8000) into tText
put fetchJSON("https://example.com/data.json") into tData
put requestLocation(12000) into tLocation

The script waits for the result and then continues in the same handler. Failures can be handled with try/catch.

Files and clipboard

put chooseFile("text/*", 1048576) into tFile
put saveFile("notes.txt", tFile["text"], "text/plain") into tSaved
put copyText(tFile["text"]) into tCopied

File access always requires a user selection or confirmation. Read results include name, type, size, text, and data URL.

Camera and microphone

put capturePhoto(1280, 720, 30000) into tPhoto
put recordAudio(3000, 20000) into tRecording

Camera streams stop immediately after capture. Audio recording is limited to 30 seconds and returns embedded media data.

Project storage

put saveValue("highScore", 1200) into tSaved
put storedValue("highScore", 0) into tScore

Storage writes occur during suspended execution, so values can be read later in the same handler.

Secure libraries

put libraryNames() into tLibraries
put libraryInfo("browsercard.standard") into tInfo
put libraryCall("browsercard.standard", "hash", "BrowserCard") into tHash

Libraries offer a limited set of approved operations and cannot directly control the authoring interface.

Timeouts and cancellation

try
  put fetchText(tURL, 5000) into tText
catch tError
  put tError into field "Status"
end try

Abort cancels pending browser requests, media streams, recordings, and library calls. Most host functions accept a final timeout argument in milliseconds.