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ActionScript 3 Complete Course / Loops & Functions

Default parameters

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

10 min read • Beginner

Default parameters 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 Default parameters 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-02-07-default-parameters.as
actionscript Try It Live
function tax(rate:Number=0.18):Number{return rate;} 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