javascript tidak berfungsi

mau tanya ini kenapa ya javascript berfungsi hanya 1 row

<script>
    var btn = document.getElementById("view1");
    var a="<?php echo $data[0]->status==1;?>";
    if(!a==0){
        btn.style.display = 'none';
    }
</script>
<script>
    var btn = document.getElementById("view2");
    var a="<?php echo $data[0]->status;?>";
    if(!a==0){
        btn.style.display = 'none';
    }
</script>

<a href='<?php echo site_url();?>approval/leadapp/<?php echo $row->activity_id;?>'  type="button" id='view1'  class="btn btn-circle blue btn-sm">View</a>
<a href='<?php echo site_url();?>approval/view_leader/<?php echo $row->activity_id;?>' type="button" id='view2' class="btn btn-circle blue btn-sm">View</a></td>