drop
英[drɒp] 美[drɑ:p]
vt.& vi. (make) drop; throw; (make) lower; reduce
vt. Give up; stop; (intentionally) lower; droop (eyes)
n. drop; airdrop; landing; a small amount
vi. (water or other liquid) drop; end; fall down (due to injury or death, etc.); exit
up
英[ʌp] 美[ʌp]
adv. On top, at a high place; get up, get up; upward; from low to high
adj. upward; rising; upright, vertical; lifted
vt.& vi .Increase; accelerate; improve; lift up, pick up
prep. at the upper end of; to a high place; to go along; to go upstream of…
n. to rise, to rise; Thrive, prosper; go uphill; (prices, etc.) rise
Bootstrap dropup style syntax
Function: Specify the drop-down menu that pops up
Bootstrap dropup style example
Bootstrap 实例 - 下拉菜单 向上下拉菜单
.dropup 类用于指定一个向上的下拉菜单。
.dropdown-menu 类用于创建下拉菜单。
Click the "Run instance" button to view the online instance