Home Web Front-end H5 Tutorial A simple method to use JS to automatically switch images after clicking a button

A simple method to use JS to automatically switch images after clicking a button

Dec 09, 2016 am 11:41 AM
js

We often see that the pictures on the main interface of a website can be switched freely, so how is it achieved?

1. The HTML page layout is as shown in the figure:

A simple method to use JS to automatically switch images after clicking a button

2. Implement the above layout

swap.html

   
<!DOCTYPE html PUBLIC &#39;-//W3C//DTD HTML 4.01 Strict//EN&#39; &#39;http://www.w3.org/TR/html4/strict.dtd&#39;>
<html>
<head>
<meta http-equiv=&#39;Content-Type&#39; content=&#39;text/html; charset=UTF-8&#39;>
<title>在此插入标题</title>
<link rel="stylesheet" type="text/css" href="swap.css"/>
<script type="text/javascript">
<!--
function swap(val){
  if(val=="left"){
    left.style.display=&#39;block&#39;;//设置为显示
    center.style.display=&#39;none&#39;;//设置为隐藏
    right.style.display=&#39;none&#39;;
  }else if(val=="center"){
    left.style.display=&#39;none&#39;;
    center.style.display=&#39;block&#39;;
    right.style.display=&#39;none&#39;;
  }else if(val=="right"){
    left.style.display=&#39;none&#39;;
    center.style.display=&#39;none&#39;;
    right.style.display=&#39;block&#39;;
  }
  }
-->
</script>
</head>
<body>
  <div class="main">
  <div class="top">
  <div class="left" id="left"><img  src="/static/imghw/default1.png"  data-src="images/left.jpg"  class="lazy"  / alt="A simple method to use JS to automatically switch images after clicking a button" ></div>
  <div class="center" id="center"><img  src="/static/imghw/default1.png"  data-src="images/center.jpg"  class="lazy"  / alt="A simple method to use JS to automatically switch images after clicking a button" ></div>
  <div class="right" id="right"><img  src="/static/imghw/default1.png"  data-src="images/right.jpg"  class="lazy"  / alt="A simple method to use JS to automatically switch images after clicking a button" ></div>
  </div>
  <div class="bottom">
  <ul>
  <li onmouseover="swap(&#39;left&#39;)"></li>
  <li onmouseover="swap(&#39;center&#39;)"></li>
  <li onmouseover="swap(&#39;right&#39;)"></li>
  </ul>  
  </div>
  </div>
  </body>
  </html>
Copy after login

3.css implementation

swap.css

@CHARSET "UTF-8";
.main{
  width:1320px;
  height:334px;
  border:1px solid red;
  background-color:silver;
}
 
.top{
  width:1300px;
  height:304px;
  margin-top: 5px;
  margin-left: 10px;
  background-color: green;
}
 
.top .left{
  display: block;//让left.jpg作为第一张图片显示
}
.top .center{
  display: none;//初始状态不显示
}
.top .right{
  display: none;//不显示
}
 
.bottom{
  width:1300px;
  height:15px;
  margin-top: 5px;
  margin-left: 10px;
  background-color: gray;
}
.bottom ul{
  margin: 0px;
  margin-left:500px;
  padding: 0px;
  width:260px;
  height:50px;
}
.bottom ul li{
  width:80px;
  height:10px;
  margin-top:3px;
  margin-right:3px;
  background-color:yellow;
  list-style-type: none;
  float:left;
}
Copy after login

4. Things to pay attention to

(1) Be clear about the difference between display and visibility.

display: When setting none, not only the content will be hidden, but also the element will not occupy a position on the page. Hiding is equivalent to the element being temporarily deleted from the page and will not have any effect on the current page.

visibility: When setting hidden, although the content will not be displayed, its elements will still work, which is equivalent to just hiding the content to be displayed, but the things still exist. As the saying goes, "Standing in the pit is not a problem";

(2) Do you want the picture to change when you click it or move the mouse to a specified position? The functions used are of course different. Here, if the table is moved to the specified area, the picture will be switched, so onmouseover() is used.


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

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to use JS and Baidu Maps to implement map pan function How to use JS and Baidu Maps to implement map pan function Nov 21, 2023 am 10:00 AM

How to use JS and Baidu Map to implement map pan function Baidu Map is a widely used map service platform, which is often used in web development to display geographical information, positioning and other functions. This article will introduce how to use JS and Baidu Map API to implement the map pan function, and provide specific code examples. 1. Preparation Before using Baidu Map API, you first need to apply for a developer account on Baidu Map Open Platform (http://lbsyun.baidu.com/) and create an application. Creation completed

Recommended: Excellent JS open source face detection and recognition project Recommended: Excellent JS open source face detection and recognition project Apr 03, 2024 am 11:55 AM

Face detection and recognition technology is already a relatively mature and widely used technology. Currently, the most widely used Internet application language is JS. Implementing face detection and recognition on the Web front-end has advantages and disadvantages compared to back-end face recognition. Advantages include reducing network interaction and real-time recognition, which greatly shortens user waiting time and improves user experience; disadvantages include: being limited by model size, the accuracy is also limited. How to use js to implement face detection on the web? In order to implement face recognition on the Web, you need to be familiar with related programming languages ​​and technologies, such as JavaScript, HTML, CSS, WebRTC, etc. At the same time, you also need to master relevant computer vision and artificial intelligence technologies. It is worth noting that due to the design of the Web side

How to create a stock candlestick chart using PHP and JS How to create a stock candlestick chart using PHP and JS Dec 17, 2023 am 08:08 AM

How to use PHP and JS to create a stock candle chart. A stock candle chart is a common technical analysis graphic in the stock market. It helps investors understand stocks more intuitively by drawing data such as the opening price, closing price, highest price and lowest price of the stock. price fluctuations. This article will teach you how to create stock candle charts using PHP and JS, with specific code examples. 1. Preparation Before starting, we need to prepare the following environment: 1. A server running PHP 2. A browser that supports HTML5 and Canvas 3

Essential tools for stock analysis: Learn the steps to draw candle charts with PHP and JS Essential tools for stock analysis: Learn the steps to draw candle charts with PHP and JS Dec 17, 2023 pm 06:55 PM

Essential tools for stock analysis: Learn the steps to draw candle charts in PHP and JS. Specific code examples are required. With the rapid development of the Internet and technology, stock trading has become one of the important ways for many investors. Stock analysis is an important part of investor decision-making, and candle charts are widely used in technical analysis. Learning how to draw candle charts using PHP and JS will provide investors with more intuitive information to help them make better decisions. A candlestick chart is a technical chart that displays stock prices in the form of candlesticks. It shows the stock price

How to use JS and Baidu Map to implement map click event processing function How to use JS and Baidu Map to implement map click event processing function Nov 21, 2023 am 11:11 AM

Overview of how to use JS and Baidu Maps to implement map click event processing: In web development, it is often necessary to use map functions to display geographical location and geographical information. Click event processing on the map is a commonly used and important part of the map function. This article will introduce how to use JS and Baidu Map API to implement the click event processing function of the map, and give specific code examples. Steps: Import the API file of Baidu Map. First, import the file of Baidu Map API in the HTML file. This can be achieved through the following code:

How to use JS and Baidu Maps to implement map heat map function How to use JS and Baidu Maps to implement map heat map function Nov 21, 2023 am 09:33 AM

How to use JS and Baidu Maps to implement the map heat map function Introduction: With the rapid development of the Internet and mobile devices, maps have become a common application scenario. As a visual display method, heat maps can help us understand the distribution of data more intuitively. This article will introduce how to use JS and Baidu Map API to implement the map heat map function, and provide specific code examples. Preparation work: Before starting, you need to prepare the following items: a Baidu developer account, create an application, and obtain the corresponding AP

PHP and JS Development Tips: Master the Method of Drawing Stock Candle Charts PHP and JS Development Tips: Master the Method of Drawing Stock Candle Charts Dec 18, 2023 pm 03:39 PM

With the rapid development of Internet finance, stock investment has become the choice of more and more people. In stock trading, candle charts are a commonly used technical analysis method. It can show the changing trend of stock prices and help investors make more accurate decisions. This article will introduce the development skills of PHP and JS, lead readers to understand how to draw stock candle charts, and provide specific code examples. 1. Understanding Stock Candle Charts Before introducing how to draw stock candle charts, we first need to understand what a candle chart is. Candlestick charts were developed by the Japanese

The relationship between js and vue The relationship between js and vue Mar 11, 2024 pm 05:21 PM

The relationship between js and vue: 1. JS as the cornerstone of Web development; 2. The rise of Vue.js as a front-end framework; 3. The complementary relationship between JS and Vue; 4. The practical application of JS and Vue.

See all articles