JSFiddle - React, Tailwind, and code Playground

HTML

<div class="unsorted">
    <div class="labelimagediv" rel="5"> 
      Div 5 here 
    </div> 
    <div class="labelimagediv" rel="3"> 
       Div 3 Here 
    </div> 
     <div class="labelimagediv" rel="4.5"> 
       Div 4.5 here 
    </div>
    <div class="labelimagediv" rel="4">
      Div 4 Here
     </div> </div>
<button class="btnSort">Sort</button>

JavaScript

$("button.btnSort").click(function () {
        var sortedDivs = $('.labelimagediv', '.unsorted').get();
        sortedDivs.sort(function(a,b) {
            return a.getAttribute('rel') - b.getAttribute('rel');
        });
        $.each(sortedDivs, function (index, value) {
            $(".unsorted").append(value);
        });
    });