I want to be able to send all the selected values from a listbox as a hidden field using JQuery. I was able to send/retrieve a single value on form submission.
如果有人可以分享一些代码片段，那将有所帮助。
提前感谢！
嗯，你到底在要求什么还不太清楚。HTML中没有“多选下拉列表”。要进行多选，您需要指定
<select id="foobar" multiple>
这将创建一个列表框，您可以在其中选择多个元素。使命感
var sel = $( #foobar ).val();
将返回所选项目的数组。
编辑
要从每个选项中获取文本，请使用.map（）或jQuery.map（（）。示例：
var sel = $( #foobar ).children( option:selected ).map(function(i,e){
return e.innerText;
}).get();
这将创建一个数组，其中包含所有选定条目的文本。
绝对没有必要这样做。 您显然使用request.getPara公尺(。 而不是request.getParacales(>,并想知道为什么只归还第一种价值。
只需相应地修复servlet代码：
String[] selectedItems = request.getParameterValues("dropdownname");
不需要丑陋的JS/jQuery黑客将它们全部作为单个参数发送。在未来的问题中，试着问如何解决问题，而不是如何实现一个解决方案，毕竟这个解决方案本身可能不是正确的解决方案。
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