Is a control element that allows the user to choose a value from a list. Dropdown-menu displays a single value when inactive and a list of values when it’s activated.
Dropdowns are huge. Since 1974 this tiny element helps us in it’s laconic way to pick and choose. But there is a problem of relevance. In SXSW Keynote 2016’ Eric Campbell & Golden Krishna dropped their hilarious lection called «You know what? F**k dropdowns» wherein in a humorous way shows the pastness and illustrates the pain points of dropdowns.
Here is a long list: