相关疑难解决方法(0)

我有一个Bootstrap下拉菜单.最后li一项是子菜单.当完整菜单下降时,如何让子菜单丢弃？这是代码:

<div class="dropdown">
    <a class="inputBarA dropdown-toggle" data-toggle="dropdown" href="#">FILTER</a>
    <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
        <li role="presentation">
            <a role="menuitem" href="#">Text</a>
        </li>
        <li role="presentation">
            <label>Label name</label>
            <label>Label name</label>
            <label class="checkbox">
                <input type="checkbox">
                Text </label>
            <label class="checkbox">
                <input type="checkbox">
                Text </label>
            <label class="checkbox">
                <input type="checkbox">
                Text </label>
            <label class="checkbox">
                <input type="checkbox">
                Text </label>
        </li>
        <li class="dropdown-submenu">
            <a tabindex="-1" href="#">Centralities</a>
            <ul class="dropdown-menu">
                <label class="radio">
                    <input type="radio" name="options" id="optionsRadios1" value="A" checked>
                    AA </label>
                <label class="radio">
                    <input type="radio" name="options" id="optionsRadios2" value="B">
                    BB </label><label class="radio">
                    <input type="radio" …