如何通过Ajax获取数据然后显示在页面？

$user_agent_arr = mall_get_user_agent_arr();
if(MALL_UA_IS_PC == 1)
{
 //****************** pc版 ******************
 include_once './list-pc.php';

}
else
{

 //****************** wap版 ******************
 include_once './list-wap.php';

} 

$pc_wap = 'wap/';
$tpl = $my_app_pai->getView(TASK_TEMPLATES_ROOT.$pc_wap.'trade/list.tpl.htm');

<div class="page-view " data-role="page-container">

  <div class="sales-list-page">
   <div id="render-ele"></div>
  </div>

 </div>

$(function()
 // 渲染模块
 {
  //请求php的url
  var TRADE_AJAX_URL = window.$__ajax_domain + 'get_trade_list.php';
  //获取已经封装在list.js里面的一个对象list_item_class
  var list_item_class = require('../../../../modules/list/list.js');
  //获取模板块
  var template = __inline('./list-item.tmpl');

  var list_obj = new list_item_class({
   ele : $("#render-ele"),//渲染数据到id为render-ele中
   url : TRADE_AJAX_URL,//请求数据连接
   template : template //渲染的模板
  });

 });

<div class="item-wrap">
 {{#each list}}
 {{#if is_enroll}}
 <a href="./detail.php?topic_id={{id}}&state=is_enter">
 {{else}}
 <a href="./detail.php?topic_id={{id}}&state=no_enter">
 {{/if}}
  <div class="item ui-border-b" >
   <div class="img-item">
    <i class="img" style="background-image: url({{img}});">

    </i>
   </div>
   <div class="text-item">
    <div class="txt-con-1">
     <h3 class="title f14">{{title}}</h3>
     <p class="txt f10 color-999">所属品类：{{type}}</p>

    </div>
    <div class="txt-con-2">
     <span class="color-333 join-in ">
      {{ enroll_text }} 
     </span>

    </div>
   </div>
  </div>
 </a>
 {{/each}}
</div>

 _self.ajax_obj = utility.ajax_request 
({
 url : self.send_url,
 data : self.ajax_params,
 beforeSend : function()
 {
self._sending = true;
_self.$loading = $.loading
({
 content:'加载中...'
});

 },
 success : function(data)
 {
self._sending = false;
//获取数据
var list_data = data.result_data.list;
console.log(data);
//渲染前处理事件
self.$el.trigger('list_render:before',[self.$list_container,data]);

_self.$loading.loading("hide");

//是否有分页
self.has_next_page = data.result_data.has_next_page;

// 无数据处理 
if(!list_data.length && page == 1)
{
 abnormal.render(self.$render_ele[0],{});

 self.$load_more.addClass('fn-hide');

 return;
}
else
{
 self.$load_more.removeClass('fn-hide');
}

//把数据放入模板
var html_str = self.template
({
 list : list_data
});
//插入渲染列表
self.$list_container.append(html_str);
//渲染后处理事件
self.$el.trigger('list_render:after',[self.$list_container,data,$(html_str)]);

self.setup_event();
 },
 error : function()
 {
self._sending = false;
_self.$loading.loading("hide");
$.tips
 ({
content:'网络异常',
stayTime:3000,
type:'warn'
 });
 }
})

// 接收参数
$page = intval($_INPUT['page']);



if(empty($page))
{
 $page = 1;
}

// 分页使用的page_count
$page_count = 5;

if($page > 1)
{
 $limit_start = ($page - 1)*($page_count - 1);
}
else
{
 $limit_start = ($page - 1)*$page_count;
}

$limit = "{$limit_start},{$page_count}";



//请求数据库的借口
$sales_list_obj = POCO::singleton ( 'pai_topic_class' );
$ret = $sales_list_obj-> get_task_list(false, '', 'id DESC', $limit);





// 输出前进行过滤最后一个数据，用于真实输出
$rel_page_count = 4;



$has_next_page = (count($ret)>$rel_page_count);

if($has_next_page)
{
 array_pop($ret);
}

$output_arr['page'] = $page;

$output_arr['has_next_page'] = $has_next_page;

$output_arr['list'] = $ret;

// 输出数据
mall_mobile_output($output_arr,false);

$tpl->output();

//接收list传过来的参数
$topic_id = intval($_INPUT['topic_id']);
$state = $_INPUT['state'];

if (empty($topic_id)) 
{
 header("location: ".'./list.php');
}

//数据库借口
$trade_detail_obj = POCO::singleton ( 'pai_topic_class' );
$ret = $trade_detail_obj->get_task_detail($topic_id,$yue_login_id);

$pc_wap = 'wap/';
$tpl = $my_app_pai->getView(TASK_TEMPLATES_ROOT.$pc_wap.'trade/detail.tpl.htm');

//模板附带以下三个参数到detail.tpl.htm中
$tpl->assign('ret', $ret);
$tpl->assign('topic_id', $topic_id);
$tpl->assign('state', $state);

<div class="sales-detail-page">
 <div class="item-wrap">
<div class="item-1 item">
 <div class="img-item">
<i class="img" >
<img src="{ret.img}"/>
</i>
 </div> 
 <div class="txt-item">
<h3 class="title f16 color-333 fb">{ret.title}</h3>
<p class="sign-in-txt color-666">
 {ret.enroll_text}
</p>
 </div>
</div>

<div class="item-3 item">
 <div class="txt-item">
<h3 class="title f14 color-333 fb">生意机会详情</h3>
<div class="txt-con f14 color-666">
 <p class="txt">{ret.content}</p>
</div>
 </div>
</div>
 </div>
 <div class="sign-name-item">
 <!-- IF state = "is_enter" -->
<button class="ui-button-submit had-joined">
 <span class="ui-button-content">已参加</span>
</button>
 <!-- ELSE -->
 <button class="ui-button-submit" id="submit">
<span class="ui-button-content">报名参加</span>
 </button>
 <!-- ENDIF -->
 </div>
</div>

var _self = {};
$btn.on('click', function() {
 var data = 
 {
topic_id : {ret.id}
 }
 utility.ajax_request({
url : window.$__ajax_domain+'add_task_enroll_trade.php',
data : data,
type : 'POST',
cache : false,
beforeSend : function() 
{
 _self.$loading = $.loading({
content : '发送中.....'
 });
},
success : function(data) 
{
 _self.$loading.loading("hide");
 //请求成功后显示成功报名提示框，点击报名提示框确定按钮跳回列表页面
if (data.result_data.result==1) 
{
var dialog = utility.dialog
({
 "title" : '' ,
 "content" : '提交成功，点击确定返回',
 "buttons" : ["确定"]
});
 dialog.on('confirm',function(event,args)
  {
  window.location.href = document.referrer;
  });

 return;
  }





}, 
error : function() 
{
 _self.$loading.loading("hide");
 $.tips({
content : '网络异常',
stayTime : 3000,
type : 'warn'
 });
}

 });

});