title: How to get an specific portion of script from a webpage in objective C?
body: <p>I am stuck in fetching some data from an html. I know I have to parse it but the problem I am struggling is that I don't know how to write the correct path (or even I don't know if it's possible) to get data from this code:</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
  //&lt;![CDATA[
  $(function(){
    var chart = new charts.QuoteChart($("#container_quote_chart"),
                                                "EXITO",
                                                {"precision":2,"prev_close":33300.0,"data_values":[[1377253260000,33300.0],[1377253440000,33280.0],[1377254100000,33280.0],[1377255600000,33220.0],[1377257400000,33220.0],[1377261660000,33200.0],[1377264000000,33200.0],[1377264060000,33200.0],[1377267780000,33200.0],[1377271260000,33200.0],[1377273120000,33200.0],[1377273180000,33200.0],[1377273240000,33240.0]],"exch_open_time":1377250200000,"exch_close_time":1377273600000,"show_1D":true,"selectedPeriod":"1D"});
          new charts.AutoComplete(chart);
          });
      //]]&gt;
  &lt;/script&gt;
  </code></pre>
  
  <p>The real data I need are the ones that start from <strong>"pref_close"</strong>  up to  <strong>"exch_close_time</strong>".</p>
  
  <p>Thanks for any help in advance.</p>