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Core Syntax

var declarations const declarations Number and int String values Boolean values Array literals Object literals Operators if statements switch statements

Loops & Functions

for loop for each loop while loop do while loop Function declaration Function expressions Default parameters Rest parameters Return values Closures

Classes & OOP

package class Constructor public and private getters and setters Inheritance override Interfaces static members final classes

Collections & XML

Vector.<T> Array methods Dictionary Object property lookup E4X XML literals XML attributes XMLList Namespace in XML JSON.parse JSON.stringify

Events

EventDispatcher addEventListener removeEventListener Custom Event MouseEvent KeyboardEvent Event bubbling stopPropagation TimerEvent ENTER_FRAME

Display List

Sprite MovieClip Shape graphics addChild removeChild DisplayObject properties Bitmap and BitmapData TextField Filters Masks

Async & Networking

URLRequest URLLoader URLVariables Loader ProgressEvent IOErrorEvent SecurityErrorEvent Socket SharedObject navigateToURL

Runtime & Utilities

try catch finally throw Error is operator as operator getDefinitionByName describeType ByteArray Date RegExp trace

ActionScript 3 Complete Course / Core Syntax

const declarations

Learn const declarations in ActionScript 3 with a construct-specific explanation, a unique example, a practical boundary, and a mastery check.

10 min read • Beginner

const declarations is an atomic ActionScript 3 topic inside Core Syntax. The example below uses the actual construct named by the lesson rather than a generic placeholder.

Focus on what const declarations changes: the input, binding, control path, object state, collection, runtime effect, or language contract. Then alter one value and verify that the behavior changes for a reason specific to this feature.

Topic-specific example

actionscript-01-02-const-declarations.as

actionscript Try It Live

const TAX:Number = 0.18;
trace(TAX);

Edge case / engineering note

Change the key input in this ActionScript 3 example and predict the result first; the named construct should be the reason the behavior changes.

Content source & attribution

Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

const declarations Mastery Check →

var declarations