Question

我想在<li>

的父类中添加一个“有效”类

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使用Javascript：

jQuery('ul li ul li a').parent('ul li').addClass('active');

我不确定为什么我不能抓住属于whoweare的li。

编辑：提供完整的代码部分。只是尝试将一个活动类添加到WHO WE ARE

标记中。

Answer 1

也许你应该用这个来简化自己：

$('ul li').on('click', 'a', function() {
    $(this).parent().addClass('active');
});

如果您想在列表中的第一个active上添加课程li，请执行以下操作：

$(document).ready(function() {
    $('ul li').first().addClass('active');

    // or select the li with an "a" in it
    $('ul li a').first().parent().addClass('active');
});

Answer 2

您的最外层<li>未包含在<ul>中，因此第一个选择器（"ul li ul li a"）将找不到任何内容。请改用：

jQuery('li ul li a')

这将选择您的ul下的3个超级链接，其中包含“下拉菜单”。下一个问题是使用parent方法。当你调用parent('ul li')时，那个选择器会导致jQuery（和我自己）一些混乱。只需在没有任何选择器的情况下调用parent()，因为parent()始终只在DOM树上移动一个级别并停在那里。它会自动选择包含每个<li>的{{1}}。

这应该可以解决问题：

<a>

父选择器Jquery

2 个答案: