By
default, Director always executes script statements starting with
the first statement and continuing in order until it reaches the
final statement or a statement that instructs a script to go somewhere
else.
The order in which statements are executed affects the order
in which you should place statements. For example, if you write
a statement that requires some calculated value, you need to put
the statement that calculates the value first.
The first statement in the following example adds two numbers,
and the second statement assigns a string representation of the
sum to a field cast member named Answer, which
appears on the Stage. The second statement could not be placed before
the first statement because the variable x has
not yet been defined.
-- Lingo syntax
x = 2 + 2
member("Answer").text = string(x)
// JavaScript syntax
var x = 2 + 2;
member("Answer").text = x.toString();
Both Lingo and JavaScript syntax provide conventions for altering
the default execution order or script statements, and for performing
actions depending on specific conditions. For example, you may want
to do the following in your scripts:
Execute a set of statements if a logical condition is
true, or execute alternate statements if the logical condition is
false.
Evaluate an expression and attempt to match the expression’s
value to a specific condition.
Execute a set of statements repeatedly until a specific condition
is met.
