如何在不允许多重选择的情况下创建 HTML 列表框？

我在 HTML 方面没有多少经验。我期待创建一个简单的列表框，但其中一个要求是不允许多重选择。列表框的大部分代码是这样的-

 <select name="sometext" multiple="multiple">
<option>text1</option>
<option>text2</option>
<option>text3</option>
<option>text4</option>
<option>text5</option>
</select>

但这允许多种选择。

在这里，一个类似的问题被提出，但是“最佳”的答案被否决了。所以我不知道还能怎么做。请帮帮我。

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小开

Remove the multiple="multiple" attribute and add SIZE=6 with the number of elements you want

you may want to check this site

http://www.htmlcodetutorial.com/forms/_SELECT.html

小开
最佳答案

Just use the size attribute:

<select name="sometext" size="5">
<option>text1</option>
<option>text2</option>
<option>text3</option>
<option>text4</option>
<option>text5</option>
</select>

To clarify, adding the size attribute did not remove the multiple selection.

The single selection works because you removed the multiple="multiple" attribute.

Adding the size="5" attribute is still a good idea, it means that at least 5 lines must be displayed. See the full reference here

小开

For Asp.Net MVC

@Html.ListBox("parameterName", ViewBag.ParameterValueList as MultiSelectList,
new {
@class = "chosen-select form-control"
})

or

  @Html.ListBoxFor(model => model.parameterName,
ViewBag.ParameterValueList as MultiSelectList,
new{
data_placeholder = "Select Options ",
@class = "chosen-select form-control"
})

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