Adobe 23101335 Scripting Guide - Page 18

Control structures, Dim appRef As New Photoshop.Application

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Scripting basics 2 Commands and methods VB Private Sub Command1_Click() Dim documentCount As long Dim appRef As New Photoshop.Application documentCount = appRef.Documents.Count If documentCount = 0 Then MsgBox "No Photoshop documents are open!" End If End Sub JS var documentCount = documents.length; if (documentCount == 0) { alert("There are no Photoshop documents open"); } 2.7.2 Control structures Control structures provide for repetitive processes, or "loops." The idea of a loop is to repeat some action, with or without changes each time through the loop, until a condition is met. Both AppleScript and Visual Basic have a variety of different control structures to choose from. The simplest form of a loop is one that repeats a series of script operations a set number of times. AS repeat with counter from 1 to 3 display dialog counter end repeat VB For counter = 1 to 3 MsgBox counter Next JS for (i = 1; i < 4; ++i) { alert(i); } Photoshop 7.0 Scripting Guide 18

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Photoshop 7.0 Scripting Guide
18
Scripting basics
Commands and methods
2
VB
Private Sub Command1_Click()
Dim documentCount As long
Dim appRef As New Photoshop.Application
documentCount = appRef.Documents.Count
If documentCount = 0 Then
MsgBox "No Photoshop documents are open!"
End If
End Sub
JS
var documentCount = documents.length;
if (documentCount == 0)
{
alert("There are no Photoshop documents open");
}
2.7.2 Control structures
Control structures provide for repetitive processes, or “loops.” The idea of a loop is to repeat
some action, with or without changes each time through the loop, until a condition is met.
Both AppleScript and Visual Basic have a variety of different control structures to choose
from. The simplest form of a loop is one that repeats a series of script operations a set number
of times.
AS
repeat with counter from 1 to 3
display dialog counter
end repeat
VB
For counter = 1 to 3
MsgBox counter
Next
JS
for (i = 1; i < 4; ++i)
{
alert(i);
}