Adobe 23101764 Scripting Guide - Page 26
Operators, 8 Commands and methods
UPC - 718659340025
View all Adobe 23101764 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 26 highlights
Scripting basics 2 Operators 2.7 Operators Operators perform calculations (addition, subtraction, multiplication, and division) on variables or values and return a result. For example: docWidth/2 would return a value equal to half of the content of the variable docWidth. So if docWidth contained the number 20.5, the value returned would be 10.25. You can also use operators to perform comparisons (equal to, not equal to, greater than, or less than, etc.). Some operators differ between AppleScript, Visual Basic and JavaScript. Consult your scripting language for operators that may be unique to your OS. AppleScript and Visual Basic use the ampersand (&) as the concatenation operator to join two strings. "Pride " & "and Prejudice." would return the string "Pride and Prejudice." JavaScript uses the "+" operator to concatenate strings. "Pride" + " and Prejudice" would return the string "Pride and Prejudice." 2.8 Commands and methods Commands (AppleScript) or methods (Visual Basic and JavaScript) are what makes things happen in a script. The type of the object you're working with determines how you manipulate it. AS In AppleScript, use the make command to create new objects, the set command to assign object references to variables and to change object properties, and the get command to retrieve objects and their properties. VB In Visual Basic, use the Add method to create new objects, the Set statement to assign object references to Visual Basic variables or properties and the assignment operator (=) to retrieve and change object properties. JS In JavaScript, use the add() method to create new objects, and the assignment operator (=) to assign both object references and variables. Photoshop CS Scripting Guide 22