我尝试将引导下拉按钮添加到 <a>但下拉菜单不起作用.我该怎么做

I tried to add a Bootstrap dropdown button to <a> but the dropdown menu wont work. How do I do this?

本文关键字：我该怎么做 不起作用 下拉菜单 添加 按钮      更新时间：2023-09-26
<li><a href="#" class=" dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-expanded="true">CONTACT<span class="caret"></span></a>    
    </li>
        <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
            <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Action</a></li>
            <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Another action</a></li>
            <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Something else here</a></li>
            <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Separated link</a></li>
        </ul>

有人可以帮我吗？ 所有内容均来自Bootstrap的网站。这是整个 html 文件http://pastebin.com/YXsVPRhz

您缺少a.dropdown-toggle中的data-target，以及目标ul的id。

对于a，添加一个数据目标属性，它是ul的 id：
data-toggle="dropdown" //sample name

对于ul，添加一个 id：
id="dropdown" //sample name

所以它应该是：

<li><a href="#" class=" dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" data-target="dropdown-menu" aria-expanded="true">CONTACT<span class="caret"></span></a>    
    </li>
        <ul class="dropdown-menu" id="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
            <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Action</a></li>
            <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Another action</a></li>
            <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Something else here</a></li>
            <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Separated link</a></li>
        </ul>

将ul添加为锚点的同级

<li>
    <a href="#" class=" dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-expanded="true">CONTACT<span class="caret"></span></a> 
    <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
        <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Action</a>
        </li>
        <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Another action</a>
        </li>
        <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Something else here</a>
        </li>
        <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Separated link</a>
        </li>
    </ul>
</li>

演示：小提琴

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