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ActionScript 3 Complete Course / Loops & Functions

Function declaration

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

10 min read • Beginner

Function declaration is an atomic ActionScript 3 topic inside Loops & Functions. The example below uses the actual construct named by the lesson rather than a generic placeholder.

Focus on what Function declaration 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-02-05-function-declaration.as
actionscript Try It Live 
function net(gross:Number, fee:Number):Number { return gross-fee; }
trace(net(100,7));
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

Function declaration Mastery Check →
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Function expressions