Nowadays, it seems that designers are having more cross-skills with front-end developers as never before.
My question is: How a UX/UI designer would be able to precisely design/describe front-end components such as sliders/carousels?
For example: My wireframe (http://tinyurl.com/basic-wireframe) has Javascript components like a slider and multiple carousels. If my designer is going to build a html/css out of the layout .psd, How is he going to work with carousel/slider if it's more complex and related to the front-end development?