JSFiddle - React, Tailwind, and code Playground

HTML

<ol class="ingredientList" id="usernameList">
    <li class="ingredient">Apples</li>
    <li class="ingredient">Carrots</li>
    <li class="ingredient">Clams</li>
    <li class="ingredient">Oysters</li>
    <li class="ingredient">Wheat</li>
</ol>
<ol class="ingredientList">
    <li class="ingredient">Barley</li>
    <li class="ingredient">Eggs</li>
    <li class="ingredient">Millet</li>
    <li class="ingredient">Oranges</li>
    <li class="ingredient">Olives</li>
</ol>

CSS

ol {margin-left:70px;list-style-type:decimal;float:left;cursor:pointer;}

JavaScript

$(".ingredient").click(function(){
    var element = $(this);
    var added = false;
    var targetList = $(this).parent().siblings(".ingredientList")[0];
    $(this).fadeOut("fast", function() {
        $(".ingredient", targetList).each(function(){
            if ($(this).text() > $(element).text()) {
                $(element).insertBefore($(this)).fadeIn("fast");
                added = true;
                return false;
            }
        });
        if(!added) $(element).appendTo($(targetList)).fadeIn("fast");
    });
});


        var listUsernames = $('#usernameList');
        var numUsernames = listUsernames.children().length;
         var data = [{name:'David', newUser:'yes'}, {name:'Sara', newUser:'yes'}, {name:'Mark', newUser:'no'}]
        $.each(data, function(i, user) {
            if(user.newUser == "yes"){

                var htmlUser = "<li class='username'>" + user.name + "</li>";
                var added = false;

                $(".ingredient", listUsernames).each(function(){
                    if ($(this).text() > user.name) {
                        $(htmlUser).insertBefore($(this));
                        added = true;
                    }

                });

                if(!added)
                    $(htmlUser).appendTo($(listUsernames));

            }

            // HERE I DO alert('numUsernames')
            // I get the same number of users before sending form

            // How can I update here the value of listUsernames and numUsernames?
        });