jquery - How to set the phone number in hidden field, and then get that hidden value and set it on changing the dropdown -


i want autofill integer field phone number of users whenever thier name selected in dropdown.i have jquery onchange function(of dropdown)where both values in same page , can , set value anywhere in page using jquery.but code not applicable in case because phone number diplayed field in other page , dropdown in page.the field autofilled in same page of dropdown.now how phone number of corresponding users selected dropdown.

below juery code 

<%= javascript_tag %>  $(document).ready(function() {   $("#issue_custom_field_values_119").change(function() {     var seloption = $(this).val(); var test = $("table.person tr td.phones").text();     alert(test);     $("#phones").val(parseint($("#num-" + seloption).text()));   }); }); <% end %> 

<html> <head> <script src="http://code.jquery.com/jquery-1.10.2.js"></script>  <script>     $(document).ready(function () {          $('select').change(function () {             $(this).val($('#phone').val())         });     }); </script> </head> <body>     <select name="car" id="select">   <option value="1">999</option>   <option value="2">888</option>   <option value="3">777</option>   <option value="4">555</option>  </select><input type="hidden" value="4" id="phone"/>  </body> </html>

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