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if (multiple-statement)

if trueOrFalse then

    statements

[else if trueOrFalse then

   statements]

[else

    statements]

end if

The multiple-statement if structure tests the specified condition and executes one or more statements if the condition is true. You use the optional else if or else form to run alternative blocks of code in case the condition following if is false.

Because each part of a complex if structure may contain more than one statement, you must have an end if statement at the end of the structure.

Demo Script

on mouseUp

 put random(19) into theNumber

 put 0 into botNum

 put 20 into topNum

 put 0 into numberOfTrys

 put "I am thinking of a number between 0 and 20." & return & ¬

 "Try to guess the number:" into sayIt

 repeat

   add 1 to numberOfTrys

   ask sayIt

   if the result is "Cancel" OR it is empty then exit repeat

   put it into theGuess

   if theGuess = theNumber then

     answer "You got it! The number is" && theGuess & "." & return &¬

     "You guessed in" && numberOfTrys && "attempts."

     exit repeat

   else if theGuess is not a number then

    put theGuess && "is not a number." into sayIt

   else if theGuess > topNum then

     put theGuess && "is greater than" && topNum & "." into sayIt

   else if theGuess < botNum then

     put theGuess && "is less than" && botNum & "." into sayIt

   else if theGuess < theNumber then

     put "The number is greater than" && theGuess & "." into sayIt

     put theGuess into botNum

   else if theGuess > theNumber then

     put "The number is less than" && theGuess & "." into sayIt

     put theGuess into topNum

   end if

    put return & "Please enter a number between" && botNum &&¬

   "and" && topNum & ":" after sayIt

 end repeat

end mouseUp

Placeholders

trueOrFalse

Any expression that evaluates to the HyperTalk and AppleScript constants true or false.

For example:

true

false

the hilite of bg btn "Yes"

fld "Zip" contains "95014"

the short name of this stack is "Fred"

statements

Any return-separated list of built-in commands, user-defined handlers, or keywords that are part of a message or function handler.

put "Hello world"   -- built-in command

get total(field 1)  -- function call

global HelpInfo     -- keyword

if (multiple-statement)

if (single-statement)

if (multiple-statement)

Demo Script

Related Topics

Placeholders

trueOrFalse

statements