Abstract: Embodiments prepare a markup language (ML) element for animation. A request to perform at least one animation on at least one ML element is intercepted or received. One or more animation preparation attribute values are defined based at least on the requested animation and current attribute values of the ML element. The ML element is altered to include the defined animation preparation attribute values, and an animation engine performs the animation of the altered ML element. The animation preparation attributes and values (e.g., style elements) may be reset, removed, or otherwise modified after animation. In some embodiments, a library of application programming interfaces (APIs) enable web browsers to request animations of legacy hypertext markup language (HTML) elements for consumption by animation engines based on JAVASCRIPT scripting or cascading style sheets (CSS).

Abstract: Embodiments provide animations with an animation engine decoupled from an animation catalog storing animation definitions. A computing device accesses at least one of the animation definitions corresponding to at least one markup language (ML) element to be animated. Final attribute values associated with the ML element are identified (e.g., provided by the caller or defined in the animation definition). The computing device animates the ML element using the accessed animation definition and the identified final attribute values. In some embodiments, the animation engine uses a single timer to animate a plurality of hypertext markup language (HTML) elements displayed by a browser.

Abstract: Embodiments prepare a markup language (ML) element for animation. A request to perform at least one animation on at least one ML element is intercepted or received. One or more animation preparation attribute values are defined based at least on the requested animation and current attribute values of the ML element. The ML element is altered to include the defined animation preparation attribute values, and an animation engine performs the animation of the altered ML element. The animation preparation attributes and values (e.g., style elements) may be reset, removed, or otherwise modified after animation. In some embodiments, a library of application programming interfaces (APIs) enable web browsers to request animations of legacy hypertext markup language (HTML) elements for consumption by animation engines based on JAVASCRIPT scripting or cascading style sheets (CSS).

Abstract: Embodiments provide animations with an animation engine decoupled from an animation catalog storing animation definitions. A computing device accesses at least one of the animation definitions corresponding to at least one markup language (ML) element to be animated. Final attribute values associated with the ML element are identified (e.g., provided by the caller or defined in the animation definition). The computing device animates the ML element using the accessed animation definition and the identified final attribute values. In some embodiments, the animation engine uses a single timer to animate a plurality of hypertext markup language (HTML) elements displayed by a browser.