User Guide

Syntax 15
Curly braces
ActionScript event handlers, class definitions, and functions are grouped together into blocks
with curly braces (
{}). You can put the opening brace on the same line as your declaration or on
the next line, as shown in the following examples. To make your code easier to read, it’s a good
idea to choose one format and use it consistently. The following examples show the opening brace
on same line as the declaration:
// Event handler
my_btn.onRelease = function() {
var myDate:Date = new Date();
var currentMonth:Number = myDate.getMonth();
};
// Class Circle.as
class Circle(radius) {
}
// Function
circleArea = function(radius:Number){
return radius * radius * Math.PI;
}
The following examples show code with opening brace on the next line:
//Event handler
my_btn.onRelease = function()
{
var myDate:Date = new Date();
var currentMonth:Number = myDate.getMonth();
};
//Class Square.as
class Square(side)
{
}
//Function
squareArea = function(side:Number)
{
return side * side;
}
Semicolons
An ActionScript statement is terminated with a semicolon (
;), as shown in the following
examples:
var column:Number = passedDate.getDay();
var row:Number = 0;
If you omit the terminating semicolon, Flash still compiles your script successfully. However, it is
good scripting practice to use semicolons because it makes your code more readable.