javascript - jQuery nextUntil 属性小于或等于值

Question

我有以下工作正常，但我需要对其进行调整，以便它将数据文件夹级别与小于或大于进行比较。

$elem.nextUntil( $("li[data-folder-level="+level+"]"), "li" ).remove();

我试过了...

$elem.nextUntil( $("li[data-folder-level<="+level+"]"), "li" ).remove();

但这行不通。

有什么想法吗？

编辑:

示例 html

<li data-folder-level="0"><a href="#">Hello world</a></li>
<li data-folder-level="1"><a href="#">Hello world</a></li>
<li data-folder-level="1"><a href="#">CLICK ME!!!!!!!!!!!!!!!</a></li>
<li data-folder-level="2"><a href="#">Will be removed...</a></li>
<li data-folder-level="2"><a href="#">Will be removed...</a></li>
<li data-folder-level="2"><a href="#">Will be removed...</a></li>
<li data-folder-level="3"><a href="#">Will be removed...</a></li>
<li data-folder-level="0"><a href="#">Hello world</a></li>
<li data-folder-level="0"><a href="#">Hello world</a></li>
<li data-folder-level="1"><a href="#">Hello world</a></li>
<li data-folder-level="0"><a href="#">Hello world</a></li>
<li data-folder-level="0"><a href="#">Hello world</a></li>
<li data-folder-level="1"><a href="#">Hello world</a></li>
<li data-folder-level="1"><a href="#">Hello world</a></li>
<li data-folder-level="1"><a href="#">Hello world</a></li>
<li data-folder-level="2"><a href="#">Hello world</a></li>
<li data-folder-level="2"><a href="#">Hello world</a></li>
<li data-folder-level="2"><a href="#">Hello world</a></li>

因此单击列表中的第 3 个将删除接下来的 4 个列表项。

Answer 1

根据文档，nextUntil需要一个选择器或一个元素作为第一个参数。

但是，从 jQuery 1.7 开始，函数似乎也可以工作了。所以你可以使用

$elem.nextUntil(function () {
  return $(this).attr("data-folder-level") <= level;
}, "li").remove(); 

$("ol").on("click", "li", function () {
  var level = +$(this).attr("data-folder-level");
  $(this).nextUntil(function () {
    return $(this).attr("data-folder-level") <= level;
  }, "li").remove();
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ol>
  <li data-folder-level="0"><a href="#">Hello world</a></li>
  <li data-folder-level="1"><a href="#">Hello world</a></li>
  <li data-folder-level="1"><a href="#">CLICK ME!!!!!!!!!!!!!!!</a></li>
  <li data-folder-level="2"><a href="#">Will be removed...</a></li>
  <li data-folder-level="2"><a href="#">Will be removed...</a></li>
  <li data-folder-level="2"><a href="#">Will be removed...</a></li>
  <li data-folder-level="3"><a href="#">Will be removed...</a></li>
  <li data-folder-level="0"><a href="#">Hello world</a></li>
  <li data-folder-level="0"><a href="#">Hello world</a></li>
  <li data-folder-level="1"><a href="#">Hello world</a></li>
  <li data-folder-level="0"><a href="#">Hello world</a></li>
  <li data-folder-level="0"><a href="#">Hello world</a></li>
  <li data-folder-level="1"><a href="#">Hello world</a></li>
  <li data-folder-level="1"><a href="#">Hello world</a></li>
  <li data-folder-level="1"><a href="#">Hello world</a></li>
  <li data-folder-level="2"><a href="#">Hello world</a></li>
  <li data-folder-level="2"><a href="#">Hello world</a></li>
  <li data-folder-level="2"><a href="#">Hello world</a></li>
</ol>