problem_ajax

<div data-role="navbar">
    <ul>
        <li><a href="<?php echo base_url();?>" data-icon="home" data-prefetch="true" data-transition="flip">HOME</a></li>
        <li><a href="<?php echo base_url();?>data/table" class="ui-btn-active" data-icon="bars" data-theme="c" data-prefetch="true" data-transition="turn"  >Data</a></li>
    </ul>
</div>

<script>
  $(document).ready(function() {
    token= "<?php echo $this->session->userdata('token');?>";
    $(function(){
      $.ajaxSetup({
        type     : "get",
        dataType : 'json',
        url      : "<?php echo base_url();?>data/json",
        cache    : false,
      });
      $.ajax({
        data    : {token:token},
        success : function(data){
          var no=0;
          data.nama.forEach(function(obj){
            cetak = "<tr>";
            cetak += "<td>"+(no+1)+"</td>";
            cetak += "<td>"+data.nama[no]+"</td>";
            cetak += "<td>"+data.volume_air[no]+"</td>";
            if(data.relay[no]==1)
              cetak += "<td>Aktif</td>";
            if(data.relay[no]==0)
              cetak += "<td>Tidak Aktif</td>";
            cetak += "<td>"+data.waktu[no]+"</td>";
            cetak += "</tr>";
            $("#iot").append(cetak);
            no++;
          });

          console.log(data);
        }//END success
      })
    });
  });
</script>