JS 里面能加 标签吗

JS  里面能加 标签不

<script>
                                    var s="";
                                    {php $dizhiweizhi=dr_site_value('dizhiweizhi');}
                                            {loop $dizhiweizhi $a}
                                            s=s+{$a[1]}+":"+{[$a[2]]}+",";
                                             {/loop}
                                             alert(s);
</script>