Javascript implements image carousel effect (1) Make images jump

Home

Web Front-end

JS Tutorial

Javascript implements image carousel effect (1) Make images jump_javascript skills

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

May 16, 2016 pm 03:15 PM

The image carousel effect can be seen on the homepage of all major websites and is relatively common. The editor below will share with you the simple implementation of this effect.

1. The picture jumps

2. Implementation of picture sequence control

3. Implementation of front and rear button control

In this article, let’s look at the pictures switching according to the interval.

Let’s complete the structure code first, and I won’t explain it in detail. Let me show you the rendering first:

The code is as follows:

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
* {
box-sizing: border-box;
}
a {
text-decoration: none;
}
ul,ol,li{
list-style: none;
margin: 0;
padding: 0;
}
#slider{
width: 800px;
height: 300px;
overflow: hidden;
position: relative;
margin: 0 auto;
}
#slider ul{
width: 2400px;
position: relative;
}
#slider ul:after{
content: " ";
width: 0;
height: 0;
display: block;
}
#slider ul li{
float: left;
width: 800px;
height: 300px;
overflow: hidden;
}
#slider ul li img{
width: 100%;
}
#slider ol{
position: absolute;
bottom: 10px;
left: 46%;
}
#slider ol li{
display: inline-block;
}
#slider ol li a{
display: inline-block;
padding:4px 8px;
border-radius:15px;
background-color: #000;
color: #fff;
}
#slider .prev, #slider .next{
display: inline-block;
position: absolute;
top: 49%;
background-color: #000;
opacity: 0.6;
color: #fff;
padding: 3px;
}
#slider .prev{
left: 10px;
}
#slider .next{
right: 10px;
}
</style>
</head>
<body>
<div id="slider">
<ul>
<li> <img src="http://www.bates-hewett.com/images/sliders/slider-1.jpg" /> </li>
<li> <img src="http://www.bates-hewett.com/images/sliders/slider-2.jpg" /> </li>
<li> <img src="http://www.bates-hewett.com/images/sliders/slider-3.jpg" /> </li>
</ul>
<ol>
<li> <a href="#">1</a> </li>
<li> <a href="#">2</a> </li>
<li> <a href="#">3</a> </li>
</ol>
<a href="#">上一张</a>
<a href="#">下一张</a>
</div>
</body>
</html>

Copy after login

Okay, now let’s control the image jump through JS.

First we need to find the location of the picture. Here we use ul to layout, so first we have to find the number of LI under UL

Then let the pictures be displayed one by one. We used the window mode, which is the mask layer mode. #slider is a window, ul is the scenery outside the window, and the scenery ul is arranged horizontally

Then the outside scenery is displayed as the size of the window, that is, each picture is used as the window scenery each time. Here, the size of the picture is controlled to be the same size as the window.

The above explains a concept, that is, layout processing. Next, we control JS. To achieve different display intervals of pictures, we need to use JS’s setInterval or setTimeout. Here we use setInterval (because this is used Easy to get up.)

Every time we jump, we control the left of the position of UL, so that the scenery under ul can be displayed differently every time, and this left is determined according to the width of the window. The first picture Of course left is -800 * 0, the second is -800*1, the third is -800*2...and so on. Then we can get the following code

<script>
(function(){
var slider = document.getElementById("slider");
var imgul = slider.getElementsByTagName("ul")[0];
var imglis = imgul.getElementsByTagName("li");
var len = imglis.length;
var index = 0;
setInterval(function(){
if(index >= len){
index = 0;
}
imgul.style.left = - (800 * index) + "px";
index++;
},2000);
})();
</script>

Copy after login

The JS code looks very simple like this. Here I set a 2-second jump sequence, and then after the number of jumps is greater than or equal to the number of pictures, let it return to the first picture.

The above content is the editor’s introduction to Javascript to implement the image carousel effect (1) to make the images jump. I hope it will be helpful to everyone.

Statement of this Website

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

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

Assassin's Creed Shadows: Seashell Riddle Solution

3 weeks ago By DDD

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

2 weeks ago By DDD

Where to find the Crane Control Keycard in Atomfall

3 weeks ago By DDD

Saving in R.E.P.O. Explained (And Save Files)

1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Assassin's Creed Shadows - How To Find The Blacksmith And Unlock Weapon And Armour Customisation

3 weeks ago By DDD

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

Where is the login entrance for gmail email?

7563

CakePHP Tutorial

1384

What is the format of the account name of steam

win11 activation key permanent

nyt connections hints and answers

Related knowledge

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.

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...

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.

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. �...

TypeScript for Beginners, Part 2: Basic Data Types Mar 19, 2025 am 09:10 AM

Once you have mastered the entry-level TypeScript tutorial, you should be able to write your own code in an IDE that supports TypeScript and compile it into JavaScript. This tutorial will dive into various data types in TypeScript. JavaScript has seven data types: Null, Undefined, Boolean, Number, String, Symbol (introduced by ES6) and Object. TypeScript defines more types on this basis, and this tutorial will cover all of them in detail. Null data type Like JavaScript, null in TypeScript

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/)...

Can PowerPoint run JavaScript? Apr 01, 2025 pm 05:17 PM

JavaScript can be run in PowerPoint, and can be implemented by calling external JavaScript files or embedding HTML files through VBA. 1. To use VBA to call JavaScript files, you need to enable macros and have VBA programming knowledge. 2. Embed HTML files containing JavaScript, which are simple and easy to use but are subject to security restrictions. Advantages include extended functions and flexibility, while disadvantages involve security, compatibility and complexity. In practice, attention should be paid to security, compatibility, performance and user experience.

See all articles