JavaScript AnimationRoll Your Own

One-offs

meets immediate needsprobably not reusabledifficult to maintain in the long run

Javascript Libraries

jQueryScript.aculo.us/PrototypeYUIDojo

Animation Libraries

$fx()Jstween (JAVASCRIPT MOTION TWEEN)Jsanim

CSS-based Animation

animate numeric propertiesmodularlimited by its values

Collection of MethodsCan address any animation needMust write a method for each propertyBecomes very unwieldy quicklyBurdensome to remember all the methods

Factory/Strategy Pattern

Small number of main methods to calculate all needed values.Easy to maintain and extend

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