jQuery UI: Draggable

Draggable Elements

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.18/themes/overcast/jquery-ui.css">
<script src="http://www.pureexample.com/js/lib/jquery.ui.touch-punch.min.js"></script>
Slide to adjust dragging snap tolerance : <span id="info" style="color:red">10</span>
<div id="slider" style="width:300px"></div>
<br>
<div id="c1" class="container">    
    <div id="drag1" class="drag" style="left:20px;top:20px;">drag me</div>
    <div id="drag2" class="drag" style="left:20px;top:50px;background-color:lightgray">drag me</div>
</div>
<div style="clear:both"/>

CSS

.drag {
    width: 100px;
    height: 100px;
    line-height: 100px;
    border: 1px solid black;
    cursor: pointer;
    border-radius: 10px;
    text-align: center;
    background-color: lightpink;
    position: relative;
}
 
.container {
    background-color: lightblue;
    width: 500px;
    height: 400px;
    border: 1px solid black;
    float: left;
    margin-right: 30px;
}

JavaScript

$(".drag").draggable({
    containment:"parent",
    snap: true,
    snapTolerance: 10
});


$("#slider").slider({
    range: "min",
    value: 10,
    min: 10,
    max: 50,
    step: 1,
    slide: function (event, ui) {
        $("#info").html(ui.value);
        $("#drag1").draggable("option", "snapTolerance", ui.value);
        $("#drag2").draggable("option", "snapTolerance", ui.value);
    }
});