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请问怎么实现选择下拉列表框的值之后执行相应的操作

WBOY
Release： 2016-06-23 14:14:19
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下拉列表框的值是一些文件名，我想实现的功能就是，选择下拉列表相应的文件之后，显示这个文件的下载地址。不要点查询按钮。


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参见 select 标签的 onchange 事件:  http://www.w3school.com.cn/htmldom/event_onchange.asp

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请问怎么实现选择下拉列表框的值之后执行相应的操作
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