is there any way to make Gridster.js tile(s) stick, that is not move up vertically to fill empty space. Kind of like the way a layout program with snap-to-grid turned on works...
Use this fork https://github.com/dsmorse/gridster.js with
shift_widgets_up: false
option.
See demo : http://dsmorse.github.io/gridster.js/demos/sticky-postion.html
Have you tried packery? http://packery.metafizzy.co/ This library has many drag and drop features.
You may also be interested in the following prototype from my team: https://github.com/ibmjstart/gridplumb
Specifically, the modifications to grister can be found at https://github.com/ibmjstart/gridplumb/blob/master/src/extend-gridster.js
My answer is not directly linked to gridster but to one of its fork : gridstack. I post this answer as I found this topic while searching for this functionality in gridstack.
So in gridstack solution is to put this property in grid options :
float:true
来源：https://stackoverflow.com/questions/24393704/make-gridster-js-tiles-stick-in-specific-grid-positions-snap-to-grid