Ajax retrieves data and displays it on the front-end page-JS Tutorial-php.cn

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';
}

Copy after login

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');

Copy after login

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>

Copy after login

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

Copy after login

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>

Copy after login

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'
  });
  }
})

Copy after login

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);

Copy after login

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();

Copy after login

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);

Copy after login

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);

Copy after login

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>

Copy after login

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'
  });
}
  });
});

Copy after login

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!