ajax搜索分页

<input type="text" name="name" id="word"/>
<button class="sou" id="{$arr.p}">搜索</button>
<input type="hidden" name="p" id="p" value="{$arr.p}">
<tbody id="td">
$(document).on("click",".sou",function(){
var p=$(this).attr("id");
var word=$("#word").val();
$p=Request::instance()->param("p");
$page=empty($p)?1:$p;
$where='';
if(Request::instance()->param("word")){
$where['name']=Request::instance()->param("word");
}
$count=Db::table("list")->where($where)->count();
$length=4;
$zong=ceil($count/$length);
$limit=($page-1)*$length;
$data=Db::table("list")->limit($limit,$length)->where($where)->select();
$arr=['list'=>$data,'last_page'=>$zong];
echo json_encode($arr);