Wrap / Break List items, replacing text with class

Question

My question is how to crop / split list items by adding Class find from the list item text, like below?
My related question is here: Wrap List items by class name

Script Link

<div class="widget-content">
    <ul>
        <li><span class="label"> demo-text1 </span> Test Content</li>
        <li><span class="label"> demo-text2 </span> Test Content</li>
        <li><span class="label"> demo-text1 </span> Test Content</li>

        <li><span class="label"> demo-text2 </span> Test Content</li>
        <li><span class="label"> demo-text1 </span> Test Content</li>
        <li><span class="label"> demo-text2 </span> Test Content</li>
    </ul>
</div>

I want to break the list items as follows:

<div class="widget-content">
    <ul class="demo-text1">
        <li><span class="label"> demo-text1 </span> Test Content</li>
        <li><span class="label"> demo-text1 </span> Test Content</li>
        <li><span class="label"> demo-text1 </span> Test Content</li>

    </ul> <!-- Break part 1 -->

    <ul class="demo-text2">
        <!-- Break part 2 -->
        <li><span class="label"> demo-text2 </span> Test Content</li>
        <li><span class="label"> demo-text2 </span> Test Content</li>
        <li><span class="label"> demo-text2 </span> Test Content</li>
    </ul>
</div>

I mean the jump list elements in two parts, for example, in the second HTML example. Add the class to the parent ul, replacing the text find from the example class="label"above (second HTML).

How can I do this simply using jQuery / JS? Here is what I tried:

$(".widget-content").each(function() {
    var $li = $(this).find("li").unwrap(); // unwrap removes the old UL wrapper
    var uniq = [];

    // Create a collection of unique "label*" classes:
    $li.find("[class^=label]").attr("class", function(i, v) {
        if (!~$.inArray(v, uniq)) uniq.push(v);
    });
    // Group LI by A class, and wrap into a new UL with the same class
    $.each(uniq, function(i, klas) {
        $("a." + klas).closest("li").wrapAll($("<ul/>", {
            class: klas
        }));
    });
});

Thanks in advance.

Answer 1

.each(), $.each(), .html(), .text(), .trim()

var arr = []; // array to store `li` elements
var widget = $(".widget-content");

$(".widget-content li").each(function(index, el) {
  var html = el.outerHTML;
  // number at `label` text
  var curr = $(".label", this).text().trim().slice(-1);
  if (arr[curr - 1]) {
    arr[curr - 1].push(html)
  } else {
    arr[curr - 1] = [html];
  }
});

widget.html(""); // remove existing `html`

$.each(arr, function(key, val) {
  var li = val.join("");
  $(".widget-content").append($("<ul/>", {
    html: li,
    "class":$(li).eq(0).find(".label").text().trim()
  }))
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js">
</script>
<div class="widget-content">
  <ul>
    <li><span class="label"> demo-text1 </span> Test Content</li>
    <li><span class="label"> demo-text2 </span> Test Content</li>
    <li><span class="label"> demo-text1 </span> Test Content</li>

    <li><span class="label"> demo-text2 </span> Test Content</li>
    <li><span class="label"> demo-text1 </span> Test Content</li>
    <li><span class="label"> demo-text2 </span> Test Content</li>
  </ul>
</div>

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