Edit in JSFiddle

$(document).ready(function() {
  $(function() {
    $( "#slider-range, #slider-range2" ).slider({
      range: true,
      min: 0,
      max: 500,
      values: [ 75, 300 ],
      slide: function( event, ui ) {
        $( "#amount" ).val( "$" + ui.values[ 0 ] + " - $" + ui.values[ 1 ] );
      }
    });
    $( "#amount" ).val( "$" + $( "#slider-range" ).slider( "values", 0 ) +
      " - $" + $( "#slider-range" ).slider( "values", 1 ) );
  });
});
<p>
    <label for="amount">Price range:</label>
    <input type="text" id="amount" style="border: 0; color: #f6931f; font-weight: bold;" />
</p>
 
<div id="slider-range"></div>
<div id="slider-range2"></div>