Sencha ExtJS-显示组合选择器始终位于控件顶部

Question

So I have this specific combo that I need to display its picker always on top (just as it behaves when it is too near to the bottom of the page). As shown here:

I tried with the pickerAlign config but I wasn't able to put it on top of my control. Thanks!

Answer 1

Found the answer, this will do:

pickerAlign : 'b-t'

Anyway, it displays the same amount of items it would as if there was the same space on top of it that the amount beneath it.