jQuery中的组合框[重复]

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                        <a href="/questions/195270/professional-jquery-based-combobox-control" dir="ltr">Professional jQuery based Combobox control? [closed]</a>
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                                (22 answers)
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            <div class="grid--cell mb0 mt8">Closed <span title="2013-10-23 15:48:47Z" class="relativetime">6 years ago</span>.</div>
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I've searched the Internet for quite a long time, but I can't find a combobox that fits my needs. Can anyone help me? Thanks in advance!

What I need is a dropdownlist that has an editable box, which acts exactly as the combobox in a Windows desktop application. I have a list of values for the user, but I also want them to be able to type in a value if the list doesn't contain the value they need. I'm using ASP.NET MVC, so I want to make sure the control can be bound by the default model binder. Thanks!

Best regards

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The solutions on Professional jQuery based Combobox control? all focus on using the input as a means to filtering and autocompleting to an existing select value.

If you're looking for the traditional combo box, which is simply "Type something or select from these pre-defined values" (no we won't hide the ones that don't match while you're typing), all you may need to do is

<select id="combo4" style="width: 200px;"
            onchange="$('input#text4').val($(this).val());">
    <option>option 1</option>
    <option>option 2</option>
    <option>option 3</option>
</select>
<input id="text4"
       style="margin-left: -203px; width: 180px; height: 1.2em; border: 0;" />

See http://bit.wisestamp.com/uncategorized/htmljquery-editable-combo-2/

Should be easy to wrap this into a plugin that converts an existing select tag, though I haven't seen that done yet.