Does interact element size/pos support percentage unit instead of px?

[ioiofadhil]

I'm trying to make dynamic elements that could be draggable/resizeable freely by users. In pixels, it works perfectly. But I want the elements to be fit size to any devices, responsively. Which, pixels, is not the best answer for this...

My idea is to convert the pixels into percentages to its parent. But I'm wondering, is there any way to directly use percentage calculation in "move()" or any other listeners?