Adding a secondary element to show where user has dragged slider to in JQuery UI -

using normal implementation of jquery ui slider code:

$(function() {   $('.slider').slider(); }); 

jquery ui creates surrounding slidable area, , handle drag. have experience extending add secondary element shows user has dragged to? want achieve have 2 colour draggable area, either side of handle.

you can add divs in slider , update size on slide event. this:

$('.slider').slider({      max: 100,      min: 0,      slide: function (e, ui) {          $('.left-side').css('width', $(ui.handle).position().left)          $('.right-side').css('width', $(e.target).width() - $(ui.handle).position().left)        }  });    $('.left-side').css('width', '0px');  $('.right-side').css('width', $('.slider').width())

.slider div {      position: relative;       height: 100%;  }      .left-side {      background-color: aliceblue;      left: 0px;      width: 200px;      float: left;  }      .right-side {      background-color: bisque;       width:200px;      float: left;  }

<link href="http://code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css" rel="stylesheet"/>    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <script src="http://code.jquery.com/ui/1.11.4/jquery-ui.js"></script>    <div class='slider'>      <div class="left-side"></div>      <div class="right-side"></div>  </div>