Detailed example code explanation of javascript implementation of window jitter and qq window jitter

Home

Web Front-end

JS Tutorial

Detailed example code explanation of javascript implementation of window jitter and qq window jitter_javascript skills

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

May 16, 2016 pm 03:22 PM

The window jitter effect is used in many places. For example, NetEase's login window has this effect. When the login fails, a jitter effect will appear. This is not only dynamic, but also makes people feel novel. Here is a paragraph like this I would like to share the code example with you.

The code is as follows:

<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8"/>
<meta name="author" content="http://www.softwhy.com/" />
<title>窗口登陆效果</title>
<style type="text/css">
#win
{
 position:relative;
 width:100px;
 height:100px;
 background-color:#666;
}
</style>
<script type="text/javascript"> 
var a=['top','left'];
var b=0; 
var u;
function fudu()
{ 
 win.style[a[b%2]]=(b++)%4<2&#63;"0px":"4px"; 
 if(b>15)
 {
 clearInterval(u);
 b=0
 } 
}
function zd()
{
 clearInterval(u); 
 u=setInterval(fudu,32) 
} 
window.onload=function()
{
 var bt=document.getElementById("bt");
 var win=document.getElementById("win");
 bt.onclick=zd;
}
</script> 
</head> 
<body > 
<button id="bt">点击振动</button> 
<div id="win"></div> 
</body> 
</html>

In the above code, when the button is clicked, the div will have a jitter effect. Of course, this effect is relatively simple. This is just for demonstration. It can be expanded in actual applications. Here is a brief introduction to the implementation process.

1. Implementation principle:

The code is simple and the principle is also very simple. The div adopts relative positioning. When the button is clicked, the fudu() function will be continuously called through the timer function setInterval(). This function can continuously set the attribute value of left or top through the modulo method, that is, continuously Randomly adjust the position of the div to achieve a jittering effect. When the value of b is greater than 15, the jittering will stop.

2. Code comments:

1.var a=['top','left'], declares an array that stores top and left strings.
2.var b=0, declare a variable b and assign it a value of 0.
3.var u, declare a variable as the return value of the timer function setInterval().
4.function fudu(){}, declare a function.
5.win.style[a[b%2]]=(b++)%4 6.if(b>15) {clearInterval(u); b=0}, if the value of b is greater than 15, then stop dithering and reset the value of b to 0.
7.function zd(){}, declare a function.
8. clearInterval(u), stops the running of the timer function. This code is to prevent the problem of jitter that may not stop when the button is continuously clicked, because the two jitters affect each other.
9.u=setInterval(fudu,30), use the timer function to continuously call the fudu function.
10.window.onload=function(){}, execute the code in the function when the document content is completely loaded.
11.var bt=document.getElementById("bt"), get the button object.
12.var win=document.getElementById("win"), get the div object.
13.bt.onclick=zd, register the event handler function for the button.

The following is a JavaScript code that imitates QQ window shaking

A very unique shaking effect, imitating the shaking effect of QQ chat window. It is implemented with JavaScript code. With this fake chat window, I didn’t expect that it is really similar to the shaking effect of QQ. It’s quite funny.

<title>仿QQ窗口抖动</title>
<img  src="/static/imghwm/default1.png"  data-src="/jscss/demoimg/qqwinows.jpg"  class="lazy"  id="win"   style="max-width:90%" alt="Detailed example code explanation of javascript implementation of window jitter and qq window jitter_javascript skills" >
<br /><br />
<button onclick="zd()">让我抖一下！</button>
<script >
function zd(u){ 
 var a=['top','left'],b=0;
 u=setInterval(function(){
 document.getElementById('win').style[a[b%2]]=(b++)%4<2&#63;0:4;
 if(b>15){clearInterval(u);b=0}
 },32)
}
</script>

Through the above example code, I will introduce to you the implementation of window jitter and QQ window jitter using JavaScript. I hope this code can help you.

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

Replace String Characters in JavaScriptMar 11, 2025 am 12:07 AM

Detailed explanation of JavaScript string replacement method and FAQ This article will explore two ways to replace string characters in JavaScript: internal JavaScript code and internal HTML for web pages. Replace string inside JavaScript code The most direct way is to use the replace() method: str = str.replace("find","replace"); This method replaces only the first match. To replace all matches, use a regular expression and add the global flag g: str = str.replace(/fi

8 Stunning jQuery Page Layout PluginsMar 06, 2025 am 12:48 AM

Leverage jQuery for Effortless Web Page Layouts: 8 Essential Plugins jQuery simplifies web page layout significantly. This article highlights eight powerful jQuery plugins that streamline the process, particularly useful for manual website creation

Build Your Own AJAX Web ApplicationsMar 09, 2025 am 12:11 AM

So here you are, ready to learn all about this thing called AJAX. But, what exactly is it? The term AJAX refers to a loose grouping of technologies that are used to create dynamic, interactive web content. The term AJAX, originally coined by Jesse J

10 jQuery Fun and Games PluginsMar 08, 2025 am 12:42 AM

10 fun jQuery game plugins to make your website more attractive and enhance user stickiness! While Flash is still the best software for developing casual web games, jQuery can also create surprising effects, and while not comparable to pure action Flash games, in some cases you can also have unexpected fun in your browser. jQuery tic toe game The "Hello world" of game programming now has a jQuery version. Source code jQuery Crazy Word Composition Game This is a fill-in-the-blank game, and it can produce some weird results due to not knowing the context of the word. Source code jQuery mine sweeping game

How do I create and publish my own JavaScript libraries?Mar 18, 2025 pm 03:12 PM

Article discusses creating, publishing, and maintaining JavaScript libraries, focusing on planning, development, testing, documentation, and promotion strategies.

jQuery Parallax Tutorial - Animated Header BackgroundMar 08, 2025 am 12:39 AM

This tutorial demonstrates how to create a captivating parallax background effect using jQuery. We'll build a header banner with layered images that create a stunning visual depth. The updated plugin works with jQuery 1.6.4 and later. Download the

How to Write a Cookie-less Session Library for JavaScriptMar 06, 2025 am 01:18 AM

This JavaScript library leverages the window.name property to manage session data without relying on cookies. It offers a robust solution for storing and retrieving session variables across browsers. The library provides three core methods: Session

Load Box Content Dynamically using AJAXMar 06, 2025 am 01:07 AM

This tutorial demonstrates creating dynamic page boxes loaded via AJAX, enabling instant refresh without full page reloads. It leverages jQuery and JavaScript. Think of it as a custom Facebook-style content box loader. Key Concepts: AJAX and jQuery

See all articles