dropload.js plug-in pull-down refresh and pull-up loading methods-JS Tutorial-php.cn

Home

Web Front-end

JS Tutorial

dropload.js plug-in pull-down refresh and pull-up loading methods

小云云

May 14, 2018 pm 05:18 PM

javascriptload

This article mainly introduces the use of dropload.js plug-in pull-down refresh and pull-up loading in detail. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.

The first step, download the dropload plug-in, the dropload plug-in download address official document: https://github.com/ximan/dropload
The second step , introduce the dropload.css and dropload.min.js files in the downloaded dropload plug-in into the page. Be careful to also introduce Jquery1.7 or above or Zepto. Choose one. Do not quote them both at the same time, because dropload is implemented based on jquery.
The third step, put the following code at the bottom of the page, pay attention to the bottom, otherwise the dropload plug-in will not be able to obtain the height

**基本代码结构**
//#content为某个p的id 
var dropload = $(&#39;#content&#39;).dropload({ 
//scrollArea很关键，要不然加载更多不起作用 
scrollArea : window, 
domUp : { 
 domClass : &#39;dropload-up&#39;, 
 domRefresh : &#39;<p class="dropload-refresh">↓下拉刷新</p>&#39;, 
 domUpdate : &#39;<p class="dropload-update">↑释放更新</p>&#39;, 
 domLoad : &#39;<p class="dropload-load"><span class="loading"></span>加载中...</p>&#39; 
}, 
domDown : { 
 domClass : &#39;dropload-down&#39;, 
 domRefresh : &#39;<p class="dropload-refresh">↑上拉加载更多</p>&#39;, 
 domLoad : &#39;<p class="dropload-load"><span class="loading"></span>加载中...</p>&#39;, 
 domNoData : &#39;<p class="dropload-noData">暂无数据</p>&#39; 
 }, 
loadUpFn : function(me){ 
 //下拉刷新需要调用的函数 
 alert("下拉刷新需要调用的函数"); 
 //重置下拉刷新 
 me.resetload(); 
}, 
loadDownFn : function(me){ 
 //上拉加载更多需要调用的函数 
 alert("上拉加载更多需要调用的函数"); 
 //定时器函数,为了看出上拉加载更多效果 
  setTimeout(function(){ 
  // 每次数据加载完，必须重置 
   me.resetload(); 
  },1000); 
  } 
});

Just view some complete examples on demand

Example one, Load bottom

<script>
$(function(){
 // 页数
 var page = 0;
 // 每页展示5个
 var size = 5;

 // dropload调用
 $(&#39;.content&#39;).dropload({
 scrollArea : window,
 loadDownFn : function(me){
  page++;
  // 拼接HTML
  var result = &#39;&#39;;
  $.ajax({
  type: &#39;GET&#39;,
  url: &#39;http://ons.me/tools/dropload/json.php?page=&#39;+page+&#39;&size=&#39;+size,//配合后台接口
  dataType: &#39;json&#39;,
  success: function(data){
   var arrLen = data.length;
   if(arrLen > 0){
   for(var i=0; i<arrLen; i++){
    result += &#39;<a class="item opacity" href="&#39;+data[i].link+&#39;">&#39;
      +&#39;<img src="/static/imghwm/default1.png"  data-src="&#39;+data[i].pic+&#39;"  class="lazy"   alt="">&#39;
      +&#39;<h3 id="data-i-title">&#39;+data[i].title+&#39;</h3>&#39;
      +&#39;<span class="date">&#39;+data[i].date+&#39;</span>&#39;
     +&#39;</a>&#39;;
   }
   // 如果没有数据
   }else{
   // 锁定
   me.lock();
   // 无数据
   me.noData();
   }
   // 为了测试，延迟1秒加载
   setTimeout(function(){
   // 插入数据到页面，放到最后面
   $(&#39;.lists&#39;).append(result);
   // 每次数据插入，必须重置
   me.resetload();
   },1000);
  },
  error: function(xhr, type){
   alert(&#39;Ajax error!&#39;);
   // 即使加载出错，也得重置
   me.resetload();
  }
  });
 }
 });
});
</script>

Example two, Load top, bottom

<script>
$(function(){
 // 页数
 var page = 0;
 // 每页展示10个
 var size = 10;

 // dropload
 $(&#39;.content&#39;).dropload({
 scrollArea : window,
 domUp : {
  domClass : &#39;dropload-up&#39;,
  domRefresh : &#39;<p class="dropload-refresh">↓下拉刷新-自定义内容</p>&#39;,
  domUpdate : &#39;<p class="dropload-update">↑释放更新-自定义内容</p>&#39;,
  domLoad : &#39;<p class="dropload-load"><span class="loading"></span>加载中-自定义内容...</p>&#39;
 },
 domDown : {
  domClass : &#39;dropload-down&#39;,
  domRefresh : &#39;<p class="dropload-refresh">↑上拉加载更多-自定义内容</p>&#39;,
  domLoad : &#39;<p class="dropload-load"><span class="loading"></span>加载中-自定义内容...</p>&#39;,
  domNoData : &#39;<p class="dropload-noData">暂无数据-自定义内容</p>&#39;
 },
 loadUpFn : function(me){
  $.ajax({
  type: &#39;GET&#39;,
  url: &#39;json/update.json&#39;,
  dataType: &#39;json&#39;,
  success: function(data){
   var result = &#39;&#39;;
   for(var i = 0; i < data.lists.length; i++){
   result += &#39;<a class="item opacity" href="&#39;+data.lists[i].link+&#39;">&#39;
     +&#39;<img src="/static/imghwm/default1.png"  data-src="&#39;+data.lists[i].pic+&#39;"  class="lazy"   alt="">&#39;
     +&#39;<h3 id="data-lists-i-title">&#39;+data.lists[i].title+&#39;</h3>&#39;
     +&#39;<span class="date">&#39;+data.lists[i].date+&#39;</span>&#39;
     +&#39;</a>&#39;;
   }
   // 为了测试，延迟1秒加载
   setTimeout(function(){
   $(&#39;.lists&#39;).html(result);
   // 每次数据加载完，必须重置
   me.resetload();
   // 重置页数，重新获取loadDownFn的数据
   page = 0;
   // 解锁loadDownFn里锁定的情况
   me.unlock();
   me.noData(false);
   },1000);
  },
  error: function(xhr, type){
   alert(&#39;Ajax error!&#39;);
   // 即使加载出错，也得重置
   me.resetload();
  }
  });
 },
 loadDownFn : function(me){
  page++;
  // 拼接HTML
  var result = &#39;&#39;;
  $.ajax({
  type: &#39;GET&#39;,
  url: &#39;http://ons.me/tools/dropload/json.php?page=&#39;+page+&#39;&size=&#39;+size,
  dataType: &#39;json&#39;,
  success: function(data){
   var arrLen = data.length;
   if(arrLen > 0){
   for(var i=0; i<arrLen; i++){
    result += &#39;<a class="item opacity" href="&#39;+data[i].link+&#39;">&#39;
      +&#39;<img src="/static/imghwm/default1.png"  data-src="&#39;+data[i].pic+&#39;"  class="lazy"   alt="">&#39;
      +&#39;<h3 id="data-i-title">&#39;+data[i].title+&#39;</h3>&#39;
      +&#39;<span class="date">&#39;+data[i].date+&#39;</span>&#39;
     +&#39;</a>&#39;;
   }
   // 如果没有数据
   }else{
   // 锁定
   me.lock();
   // 无数据
   me.noData();
   }
   // 为了测试，延迟1秒加载
   setTimeout(function(){
   // 插入数据到页面，放到最后面
   $(&#39;.lists&#39;).append(result);
   // 每次数据插入，必须重置
   me.resetload();
   },1000);
  },
  error: function(xhr, type){
   alert(&#39;Ajax error!&#39;);
   // 即使加载出错，也得重置
   me.resetload();
  }
  });
 },
 threshold : 50
 });
});
</script>

Example three, Load multiple times

$(function(){
 //利用此写法，可以限制多次加载的个数。
 var timer;

 $(&#39;.header .ipt&#39;).on(&#39;input&#39;,function(){
 var _length = $(this).val();
 // 如果输入值不是数字或者是空，就跳出
 if(isNaN(_length) || _length === &#39;&#39;){
  return false;
 }
 clearTimeout(timer);
 timer = setTimeout(function(){//也可不用定时器
  // 清空内容
  $(&#39;.lists&#39;).html(&#39;&#39;);
  $(&#39;.dropload-down&#39;).remove();

  var counter = 0;
  // 每页展示4个
  var num = 4;
  var pageStart = 0,pageEnd = 0;
  // dropload
  $(&#39;.content&#39;).dropload({
  scrollArea : window,
  loadDownFn : function(me){
   $.ajax({
   type: &#39;GET&#39;,
   url: &#39;json/more.json&#39;,
   dataType: &#39;json&#39;,
   success: function(data){
    var result = &#39;&#39;;
    counter++;
    pageEnd = num * counter;
    pageStart = pageEnd - num;

    for(var i = pageStart; i < pageEnd; i++){
    result += &#39;<a class="item opacity" href="&#39;+data.lists[i].link+&#39;">&#39;
      +&#39;<img src="/static/imghwm/default1.png"  data-src="&#39;+data.lists[i].pic+&#39;"  class="lazy"   alt="">&#39;
      +&#39;<h3 id="data-lists-i-title">&#39;+data.lists[i].title+&#39;</h3>&#39;
      +&#39;<span class="date">&#39;+data.lists[i].date+&#39;</span>&#39;
      +&#39;</a>&#39;;
    if((i + 1) >= _length || (i + 1) >= data.lists.length){
     // 锁定
     me.lock();
     // 无数据
     me.noData();
     break;
    }
    }
    // 为了测试，延迟1秒加载
    setTimeout(function(){
    $(&#39;.lists&#39;).append(result);
    // 每次数据加载完，必须重置
    me.resetload();
    },1000);
   },
   error: function(xhr, type){
    alert(&#39;Ajax error!&#39;);
    // 即使加载出错，也得重置
    me.resetload();
   }
   });
  }
  });
 },500);
 });

Example 4, Fixed layout, load top and bottom

$(function(){
 // 按钮操作
 $(&#39;.header .btn&#39;).on(&#39;click&#39;,function(){
 var $this = $(this);
 if(!!$this.hasClass(&#39;lock&#39;)){
  $this.attr(&#39;class&#39;,&#39;btn unlock&#39;);
  $this.text(&#39;解锁&#39;);
  // 锁定
  dropload.lock();
  $(&#39;.dropload-down&#39;).hide();
 }else{
  $this.attr(&#39;class&#39;,&#39;btn lock&#39;);
  $this.text(&#39;锁定&#39;);
  // 解锁
  dropload.unlock();
  $(&#39;.dropload-down&#39;).show();
 }
 });

 // dropload
 var dropload = $(&#39;.inner&#39;).dropload({
 domUp : {
  domClass : &#39;dropload-up&#39;,
  domRefresh : &#39;<p class="dropload-refresh">↓下拉刷新</p>&#39;,
  domUpdate : &#39;<p class="dropload-update">↑释放更新</p>&#39;,
  domLoad : &#39;<p class="dropload-load"><span class="loading"></span>加载中...</p>&#39;
 },
 domDown : {
  domClass : &#39;dropload-down&#39;,
  domRefresh : &#39;<p class="dropload-refresh">↑上拉加载更多</p>&#39;,
  domLoad : &#39;<p class="dropload-load"><span class="loading"></span>加载中...</p>&#39;,
  domNoData : &#39;<p class="dropload-noData">暂无数据</p>&#39;
 },
 loadUpFn : function(me){
  $.ajax({
  type: &#39;GET&#39;,
  url: &#39;json/update.json&#39;,
  dataType: &#39;json&#39;,
  success: function(data){
   var result = &#39;&#39;;
   for(var i = 0; i < data.lists.length; i++){
   result += &#39;<a class="item opacity" href="&#39;+data.lists[i].link+&#39;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >&#39;
     +&#39;<img src="/static/imghwm/default1.png"  data-src="&#39;+data.lists[i].pic+&#39;"  class="lazy"   alt="">&#39;
     +&#39;<h3 id="data-lists-i-title">&#39;+data.lists[i].title+&#39;</h3>&#39;
     +&#39;<span class="date">&#39;+data.lists[i].date+&#39;</span>&#39;
     +&#39;</a>&#39;;
   }
   // 为了测试，延迟1秒加载
   setTimeout(function(){
   $(&#39;.lists&#39;).html(result);
   // 每次数据加载完，必须重置
   dropload.resetload();
   },1000);
  },
  error: function(xhr, type){
   alert(&#39;Ajax error!&#39;);
   // 即使加载出错，也得重置
   dropload.resetload();
  }
  });
 },
 loadDownFn : function(me){
  $.ajax({
  type: &#39;GET&#39;,
  url: &#39;json/more.json&#39;,
  dataType: &#39;json&#39;,
  success: function(data){
   var result = &#39;&#39;;
   for(var i = 0; i < data.lists.length; i++){
   result += &#39;<a class="item opacity" href="&#39;+data.lists[i].link+&#39;">&#39;
     +&#39;<img src="/static/imghwm/default1.png"  data-src="&#39;+data.lists[i].pic+&#39;"  class="lazy"   alt="">&#39;
     +&#39;<h3 id="data-lists-i-title">&#39;+data.lists[i].title+&#39;</h3>&#39;
     +&#39;<span class="date">&#39;+data.lists[i].date+&#39;</span>&#39;
     +&#39;</a>&#39;;
   }
   // 为了测试，延迟1秒加载
   setTimeout(function(){
   $(&#39;.lists&#39;).append(result);
   // 每次数据加载完，必须重置
   dropload.resetload();
   },1000);
  },
  error: function(xhr, type){
   alert(&#39;Ajax error!&#39;);
   // 即使加载出错，也得重置
   dropload.resetload();
  }
  });
 }
 });
});

Related recommendations:

About how to use dropload.js

Example details the encapsulation process of mui pull-up to load more pull-down refresh data

WeChat applet list drop-down Analysis of implementation methods of refresh and pull-up loading

The above is the detailed content of dropload.js plug-in pull-down refresh and pull-up loading methods. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

JavaScript and the Web: Core Functionality and Use CasesApr 18, 2025 am 12:19 AM

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding the JavaScript Engine: Implementation DetailsApr 17, 2025 am 12:05 AM

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python vs. JavaScript: The Learning Curve and Ease of UseApr 16, 2025 am 12:12 AM

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python vs. JavaScript: Community, Libraries, and ResourcesApr 15, 2025 am 12:16 AM

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

From C/C to JavaScript: How It All WorksApr 14, 2025 am 12:05 AM

The shift from C/C to JavaScript requires adapting to dynamic typing, garbage collection and asynchronous programming. 1) C/C is a statically typed language that requires manual memory management, while JavaScript is dynamically typed and garbage collection is automatically processed. 2) C/C needs to be compiled into machine code, while JavaScript is an interpreted language. 3) JavaScript introduces concepts such as closures, prototype chains and Promise, which enhances flexibility and asynchronous programming capabilities.

JavaScript Engines: Comparing ImplementationsApr 13, 2025 am 12:05 AM

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

Beyond the Browser: JavaScript in the Real WorldApr 12, 2025 am 12:06 AM

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.

Building a Multi-Tenant SaaS Application with Next.js (Backend Integration)Apr 11, 2025 am 08:23 AM

I built a functional multi-tenant SaaS application (an EdTech app) with your everyday tech tool and you can do the same. First, what’s a multi-tenant SaaS application? Multi-tenant SaaS applications let you serve multiple customers from a sing

See all articles

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)

1 months agoBy尊渡假赌尊渡假赌尊渡假赌

R.E.P.O. Best Graphic Settings

1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Assassin's Creed Shadows: Seashell Riddle Solution

3 weeks agoByDDD

What's New in Windows 11 KB5054979 & How to Fix Update Issues

2 weeks agoByDDD

Will R.E.P.O. Have Crossplay?

1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Notepad++7.3.1

Easy-to-use and free code editor

Hot Topics

Where is the login entrance for gmail email?

7555

CakePHP Tutorial

1383

What is the format of the account name of steam

win11 activation key permanent

nyt connections hints and answers