JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/themes/base/jquery-ui.css" type="text/css" />

<div class="demo ui-widget-content" id="demo">

    <ul id="sortable">
        <li><div class="ui-state-default" id="1" >1</div></li>
        <li><div class="ui-state-default">2</div></li>
        <li><div class="ui-state-default">3</div></li>
        <li><div class="ui-state-default">4</div></li>
        <li><div class="ui-state-default">5</div></li>
    </ul>

</div>
<input type="button" name='Enable' id='Enable' value="Enable" />
<input type="button" name='Disable' id='Disable' value="Disable" />

CSS

#sortable { list-style-type: none; margin: 0; padding: 0; }
#sortable li {float: left; width: 100px; height: 100px; font-size: 4em; text-align: center; position:relative}
.demo{ width: 400px; height: 400px; padding:10px}
#sortable li div{
    width:90px;
    height:90px;
}

JavaScript

var original;
$( "#sortable li" ).draggable({
    grid: [100,100],
    containment:'#demo',
    start:function(event, ui){
        original = $(ui.helper).position();
    }
});
$('#sortable li').each(function(){
    $(this).css({top:$(this).position().top,left:$(this).position().left});
});
$('#sortable li').css({position:'absolute'});

$( "#sortable li" ).bind( "dragstop", function(event, ui) {
    $( "#sortable li" ).each(function(){
        if ($(this).hasClass('ui-draggable-dragging')) return;
        if(compareOffset($(this).offset(),ui.offset)){
            console.log(original);
            $(this).animate({left:original.left,top:original.top});
            console.log($(this).position());
            return;
        }         
    });
});

function compareOffset(offset1, offset2){
    return offset1.top==offset2.top && offset1.left==offset2.left;
}

$('#Enable').click(function(){
       $("#sortable li").draggable({
                    disabled : false
                });
    });

$('#Disable').click(function(){
       $("#sortable li").draggable({
                    disabled : true
                });
    });