Given a group of select fields with the same options, SelectUnique will remove an option from the other select fields when it's selected, and put it back when it's changed.

A non-obtrusive image dropdown menu that extends and replaces a standard HTML Select control.

mootools select element replacement as a styling enhancement

用于操作select的option隐藏或显示的插件，您可以指定相应的option进行显示或隐藏，而不必对其移除操作。

Providing a solid base for redesigning the native select element

XML query in Python

jQuery plugin for select fields

select, tree-select ui component for react

A TCP and UDP multiplex service using select.

A forked and fixed version of the implementation of a drop down menu for react-native

NSMutableArray+SMKArrayDict

Demo：

a tiny powerful cascading dropdown list component with pure javascript

Selection algorithm using quicksort partitioning

A simple extension to make your life with <select multiple> easier.

Class for working with table in PHP, select, where

zdropdown is pure javascript plugin

Add a select or create dropdown with a modal for creating new records on the same page