write in asp textbox from javascript

<script>
  $(function() {
    var projects = [
      {
        value: "jquery",
        label: "jQuery",       
      },
      {
        value: "jquery-ui",
        label: "jQuery UI",
      }
    ];
 
    $( "#project" ).autocomplete({
      minLength: 0,
      source: projects,
      focus: function( event, ui ) {
        $( "#project" ).val( ui.item.label );
        return false;
      },
      select: function( event, ui ) {
        $( "#project" ).val( ui.item.label );
        $( "#project-id" ).val( ui.item.value );
        return false;
      }
    })
    .autocomplete( "instance" )._renderItem = function( ul, item ) {
      return $( "<li>" )
        .append( "<a>" + item.label + "<br>" + item.desc + "</a>" )
        .appendTo( ul );
    };
  });
  </script>

$( "#project-id" ).val( ui.item.value );