Native JS drop-down loading plug-in sharing
Usage:
new downUpData({url:"http://192.168.1.103:8080/test/
data.json",distance:20,callback:function(resp,config){
var oUl = document.getElementById('ul');
for(var i=0;i<resp.data.length;i+=1){
oUl.innerHTML+= '<li>'+ resp.data[i].title +'</li>';
}
}}).isBottom();
By default, scrolling to the bottom will request ajax
Parameter description:
url: Requested data address, does not support cross-domain (required)
distance: How far from the bottom to load (optional parameter)
callback: when scrolling to the specified After the ajax request is completed, this callback function will be triggered. There are two parameters in it. The first one is data (and converted into a JSON object, using JSON.parse. This method may not be supported by lower version browsers). The two parameters are the parameters passed in. You can use this when you need to change the request information. For example, if you want to have a paging effect, you need to change the url address.
callback(name1,name2)
name1:data
name2:configuration
Source code:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body,ul{
margin:0;
padding:0;
}
</style>
</head>
<body>
<ul id="ul">
</ul>
<script>
function downUpData(obj){
this.config = obj;
};
downUpData.prototype = {
// 判断是否到达底部
isBottom:function(){
var _this = this;
var scrollH = null,
clientHeight = null;
scrollTop = null;
distance = this.config.distance||0;
h = 0;
function scroll(){
scrollH = document.body.scrollHeight||document.documentElement.scrollHeight;
clientHeight = window.innerHeight;
scrollTop = document.body.scrollTop||document.documentElement.scrollTop;
h = clientHeight + scrollTop;
if(h>=scrollH-distance){
_this.ajax();
}
}
scroll();
window.onscroll = function(){
scroll();
};
},
// 发送AJAX请求
ajax:function(){
var _this = this;
var xhr = null;
if(window.XMLHttpRequest){
xhr = new XMLHttpRequest();
}else{
xhr = new ActiveXObject("Microsoft.XMLHTTP");
}
xhr.open("GET",this.config.url,true);
xhr.onreadystatechange = function(){
if(xhr.readyState==4&&xhr.status==200){
_this.config.callback(JSON.parse(xhr.responseText),_this.config);
}
}
xhr.send();
}
};
new downUpData({url:"http://192.168.1.103:8080/test/data.json",distance:20,callback:function(resp,config){
console.log(config)
var oUl = document.getElementById('ul');
for(var i=0;i<resp.data.length;i+=1){
oUl.innerHTML+= '<li>'+ resp.data[i].title +'</li>';
}
}}).isBottom();
</script>
</body>
</html>The above is the entire content of this article. I hope that the content of this article can bring some help to everyone's study or work. I also hope to support the PHP Chinese website!
For more native JS drop-down loading plug-in sharing related articles, please pay attention to the PHP Chinese website!
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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1387
52
What should I do if I encounter garbled code printing for front-end thermal paper receipts?
Apr 04, 2025 pm 02:42 PM
Frequently Asked Questions and Solutions for Front-end Thermal Paper Ticket Printing In Front-end Development, Ticket Printing is a common requirement. However, many developers are implementing...
Who gets paid more Python or JavaScript?
Apr 04, 2025 am 12:09 AM
There is no absolute salary for Python and JavaScript developers, depending on skills and industry needs. 1. Python may be paid more in data science and machine learning. 2. JavaScript has great demand in front-end and full-stack development, and its salary is also considerable. 3. Influencing factors include experience, geographical location, company size and specific skills.
Demystifying JavaScript: What It Does and Why It Matters
Apr 09, 2025 am 12:07 AM
JavaScript is the cornerstone of modern web development, and its main functions include event-driven programming, dynamic content generation and asynchronous programming. 1) Event-driven programming allows web pages to change dynamically according to user operations. 2) Dynamic content generation allows page content to be adjusted according to conditions. 3) Asynchronous programming ensures that the user interface is not blocked. JavaScript is widely used in web interaction, single-page application and server-side development, greatly improving the flexibility of user experience and cross-platform development.
How to merge array elements with the same ID into one object using JavaScript?
Apr 04, 2025 pm 05:09 PM
How to merge array elements with the same ID into one object in JavaScript? When processing data, we often encounter the need to have the same ID...
How to achieve parallax scrolling and element animation effects, like Shiseido's official website?
or:
How can we achieve the animation effect accompanied by page scrolling like Shiseido's official website?
Apr 04, 2025 pm 05:36 PM
Discussion on the realization of parallax scrolling and element animation effects in this article will explore how to achieve similar to Shiseido official website (https://www.shiseido.co.jp/sb/wonderland/)...
The difference in console.log output result: Why are the two calls different?
Apr 04, 2025 pm 05:12 PM
In-depth discussion of the root causes of the difference in console.log output. This article will analyze the differences in the output results of console.log function in a piece of code and explain the reasons behind it. �...
Is JavaScript hard to learn?
Apr 03, 2025 am 12:20 AM
Learning JavaScript is not difficult, but it is challenging. 1) Understand basic concepts such as variables, data types, functions, etc. 2) Master asynchronous programming and implement it through event loops. 3) Use DOM operations and Promise to handle asynchronous requests. 4) Avoid common mistakes and use debugging techniques. 5) Optimize performance and follow best practices.
How to implement panel drag and drop adjustment function similar to VSCode in front-end development?
Apr 04, 2025 pm 02:06 PM
Explore the implementation of panel drag and drop adjustment function similar to VSCode in the front-end. In front-end development, how to implement VSCode similar to VSCode...
