Ajax retrieves data and displays it on the front-end page

This time I will bring you Ajax to obtain data and display it on the front-end page. What are the precautions after Ajax obtains data and display it on the front-end page. The following is a practical case, let's take a look.

Introduction to the main function process

Loop to obtain list data

Click on the list data to enter the details page

Click to register and a successful registration prompt box will pop up

Click on the prompt box Click the OK button to jump back to the list page

Code implementation process and explanation

##1. List page

1. When accessing the link list.php, determine whether it is the PC side or the client side

$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';
}

2. If it is the wap version, jump to the list-wap.php page and load list.tpl.htm Page

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

3, list.tpl.htm page to render template

HTML

<p class="page-view " data-role="page-container">
    <p class="sales-list-page">
      <p id="render-ele"></p>
    </p>
  </p>

JS

$(function()
  // 渲染模块
  {
    //请求php的url
    var TRADE_AJAX_URL = window.$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
    });
  });

list-item.tmpl template content (loop List content)

<p 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}}
    <p class="item ui-border-b" >
      <p class="img-item">
        <i class="img" style="background-image: url({{img}});">
        </i>
      </p>
      <p class="text-item">
        <p class="txt-con-1">
          <h3 class="title f14">{{title}}</h3>
          <p class="txt f10 color-999">所属品类：{{type}}</p>
        </p>
        <p class="txt-con-2">
          <span class="color-333 join-in ">
            {{ enroll_text }} 
          </span>
        </p>
      </p>
    </p>
  </a>
  {{/each}}
</p>

4. List.js performs data processing, which is only some of the methods of the object. Please write the specific method by yourself.

 _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'
  });
  }
})

5. get_trade_list.php receives the request from the front-end page, then collects and processes the data and finally returns the data to the front-end page

// 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);

6. The front-end page receives the request returned by get_trade_list.php Data, so as to judge and display the contents of the database in the front page. Template output

$tpl->output();

Details page

1. Click the list page to enter the details page (detail.php)

detail. The php page receives the data from the list

//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);

2. Determine whether it is the PC side or the client (similar to the list page)

3. Jump to detail-wap.php to load the template detail.tpl .htm also carries parameters

$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);

4. Fields in the page reference object ret

<p class="sales-detail-page">
  <p class="item-wrap">
<p class="item-1 item">
  <p class="img-item">
<i class="img" >
<img src="{ret.img}"/>
</i>
  </p> 
  <p class="txt-item">
<h3 class="title f16 color-333 fb">{ret.title}</h3>
<p class="sign-in-txt color-666">
  {ret.enroll_text}
</p>
  </p>
</p>
<p class="item-3 item">
  <p class="txt-item">
<h3 class="title f14 color-333 fb">生意机会详情</h3>
<p class="txt-con f14 color-666">
  <p class="txt">{ret.content}</p>
</p>
  </p>
</p>
  </p>
  <p 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 -->
  </p>
</p>

5. Click the sign-up button for data processing

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'
  });
}
  });
});

I believe you have read this article You have mastered the case method. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

Recommended reading:

Ajax+mysq realizes the three-level linkage list of provinces and municipalities

Ajax transmits Json and xml data Detailed explanation of the steps (with code)

The above is the detailed content of Ajax retrieves data and displays it on the front-end page. For more information, please follow other related articles on the PHP Chinese website!