Version Constant

You can use AppleScript's version property to check the current version of AppleScript. The following script checks for a version greater than or equal to version 1.3.4 before performing any other operations.



 
if (version as string) ≥ "1.3.4" then

    -- Perform any operations that depend on the

    -- presence of AppleScript version 1.3.4 or later.

end if

Version is a property of other applications as well as AppleScript, so to access the AppleScript version inside a Tell block to another application, you must use the phrase AppleScript's version or version of AppleScript :



 
tell application "AppleWorks"

    version --result: "5.0v1" (version of AppleWorks)

    if (AppleScript's version as string)  ≥ "1.3.4" then

    -- Perform any operations that depend on the

    -- presence of AppleScript version 1.3.4 or later.

    end if

end tell

For a description of the global variable AppleScript , see AppleScript Properties.

The following script checks for version 8.5 or later of the Finder, and puts up a warning if it isn't present (using the Display Dialog scripting addition command).



 
tell application "Finder"

    --check to make sure System 8.5 or later is installed

    set theVersion to (get the version) as number

    if theVersion is less than 8.5 then

        beep

        display dialog ¬

            "This script requires MacOS 8.5 or later." ¬

            buttons {"Cancel"} default button 1 with icon 0

    end if

end tell