如何从 jquery 中只有一个类的 ul 中选择 li
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How to select li from ul having only one class in jquery
提问by Abhishek
I want to select all li elements from ul having class "one" only
我想从 ul 中选择所有 li 元素，只有“一”类
<ul class="one">
<li class="heading">
<li class="list">
<li class="list">
<li class="list">
<li class="list">
</ul>
<ul class="one two ">
<li class="heading">
<li class="list">
<li class="list">
<li class="list">
<li class="list">
</ul>
回答by Andy E
Easiest:
最简单：
$('ul[class="one"] li');
Alternative, select .onebut not .two:
替代，选择.one但不.two：
$('ul.one:not(.two) li');
回答by Brian Scott
You can use the jquery filter function to get a count of how many classes have been assigned to the element. When looking for all UL's with class 'one' only then the number of unique classes against the item will be 1. Once you have the filtered UL's you can simply select the sub LI's.
您可以使用 jquery 过滤器函数来计算已分配给元素的类数。当查找所有类别为“1”的 UL 时，针对该项目的唯一类别的数量将为 1。一旦您筛选出 UL，您就可以简单地选择子 LI。
var listItems =
$('ul.one')
.filter(function(index) {
return $(this).attr('class').split(' ').length == 1;
})
.find('li');
