Shulou(Shulou.com)06/03 Report--

This article introduces the relevant knowledge of "how to use JavaScript to achieve the drop-down list selection box". In the operation of the actual case, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Create a page

* * two drop-down selection boxes

-set property multiple property-multiple= "multiple" (drop-down selection box for multi-line display)

* * four buttons with events

Tip: multi-select ctrl or shift click options

The code is as follows:

HTML sample div#left {float:left;}

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