JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery_lazyload/1.9.3/jquery.lazyload.js"></script>
<button id="mybutton1">run 1</button><button id="mybutton100">run 100</button><div id="mydiv" style="height:200px;overflow:auto">
    <ul id="myul"></ul>
</div>

JavaScript

$('#mybutton1').click(function(){
    runit()    
});  
$('#mybutton100').click(function(){
    for(var i=0;i<100;i++){
        runit();
    }
});

function runit(){
    var start = new Date().getTime();
    
    $('#myul').empty();
    $('#myul').append('<li><img src="http://cdn1.iconfinder.com/data/icons/duesseldorf/32/process.png" data-original="http://cdn1.iconfinder.com/data/icons/realistiK-new/48x48/actions/stop.png" class="lazy"></li><li><img src="http://cdn1.iconfinder.com/data/icons/duesseldorf/32/process.png" data-original="http://cdn1.iconfinder.com/data/icons/nuove/32x32/actions/button_cancel.png" class="lazy"></li><li><img src="http://cdn1.iconfinder.com/data/icons/duesseldorf/32/process.png" data-original="http://cdn2.iconfinder.com/data/icons/oxygen/48x48/actions/media-playback-stop.png" class="lazy"></li><li><img src="http://cdn1.iconfinder.com/data/icons/duesseldorf/32/process.png" data-original="http://cdn3.iconfinder.com/data/icons/fatcow/32x32_0760/resultset_next.png" class="lazy"></li><li><img src="http://cdn1.iconfinder.com/data/icons/duesseldorf/32/process.png" data-original="http://cdn2.iconfinder.com/data/icons/iconslandplayer/PNG/48x48/CircleBordered/Stop1PressedBlue.png" class="lazy"></li><li><img src="http://cdn1.iconfinder.com/data/icons/duesseldorf/32/process.png" data-original="http://cdn3.iconfinder.com/data/icons/musthave/48/Stop.png" class="lazy"></li><li><img src="http://cdn1.iconfinder.com/data/icons/duesseldorf/32/process.png" data-original="http://cdn2.iconfinder.com/data/icons/picol-vector/32/server_stop-48.png" class="lazy"></li><li><img src="http://cdn1.iconfinder.com/data/icons/duesseldorf/32/process.png" data-original="http://cdn1.iconfinder.com/data/icons/realistiK-new/48x48/actions/stop.png" class="lazy"></li><li><img src="http://cdn1.iconfinder.com/data/icons/duesseldorf/32/process.png" data-original="http://cdn1.iconfinder.com/data/icons/nuove/32x32/actions/button_cancel.png" class="lazy"></li><li><img...