在网上找了几个多选下拉列表的例子，还真是没有太合适的。特殊情况又不许用jQuery，所以自己写了一个玩玩儿。还没有在正式场合中使用。看截图。
多选下拉列表
Author
Cite
APA
达拉斯・卢. (2010-12-28). Dallas Lu. 多选下拉列表 [Blog post]. https://dallas.lu/multiple-drop-down-list/
MLA
达拉斯・卢. "多选下拉列表." Dallas Lu, 2010-12-28 https://dallas.lu/multiple-drop-down-list/. Accessed 2025-06-17
Chicago (CMS)
达拉斯・卢. "多选下拉列表." Dallas Lu (Blog), 2010-12-28 https://dallas.lu/multiple-drop-down-list/
Harvard
达拉斯・卢. (2010). 多选下拉列表. Dallas Lu. https://dallas.lu/multiple-drop-down-list/
Vancouver
达拉斯・卢. 多选下拉列表. Dallas Lu [Internet]. 2010-12-28; Available from: https://dallas.lu/multiple-drop-down-list/
Bibtex
@online{达拉斯・卢_2010_多选下拉列表,
author = {达拉斯・卢},
title = {{多选下拉列表}},
journal = {Dallas Lu},
type = {Blog},
doi = {https://dallas.lu/multiple-drop-down-list/},
urldate = {2025-06-17},
date = {2010-12-28},
year = {2010},
month = {12},
day = {28}
}
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