Home Web Front-end JS Tutorial How to use JavaScript&jQuery to implement a scrolling bulletin board (code example)

How to use JavaScript&jQuery to implement a scrolling bulletin board (code example)

Jan 21, 2019 am 11:20 AM
javascript jquery

本篇文章给大家带来的内容是关于如何利用JavaScript&jQuery实现滚动公告栏(代码实例),有一定的参考价值,有需要的朋友可以参考一下,希望对你有所帮助。

How to use JavaScript&jQuery to implement a scrolling bulletin board (code example)

首先看HTML结构,css样式这里不再给出

<div class="book_class">
                <div id="dome">
                    <div id="dome1">
                        <ul id="express">
                            <li>・2010考研英语大纲到货75折...</li>
                            <li>・权威定本四大名著(人民文...</li>
                            <li>・口述历史权威唐德刚先生国...</li>
                            <li>・袁伟民与体坛风云:实话实...</li>
                            <li>・我们台湾这些年:轰动两岸...</li>
                            <li>・畅销教辅推荐:精品套书50...</li>
                            <li>・2010版法律硕士联考大纲75...</li>
                            <li>・计算机新书畅销书75折抢购</li>
                            <li>・2009年孩子最喜欢的书>></li>
                            <li>・弗洛伊德作品精选集59折</li>
                            <li>・畅销教辅推荐:精品套书50...</li>
                        </ul>
                    </div>
                </div>
            </div>
Copy after login

js代码

请首先确保已经引入jQuery

//滚动字
  //确保绝对定位
  //使用定时函数
  var top=0;  var t = setInterval(function () {    //先设置margin-top为0
    $("#express li:first").css("margin-top",top);    //li的高度为25,故这里以25判断第一行是否走出ul。
    if(top<-25){      //如果第一行已经走出ul,将top归零,为下个li做准备
      top=0;      //这句话的意思是,先将首行的top设为0,拷贝该行,放置最后一行
      //注意,如果这里不将第一行的top归零,拷贝后他将保持top=-25的状态,效果就是叠加在最后一行上。
      $("#express li:first").css("margin-top",top).clone(true).appendTo (&#39;#express&#39;);      //移除首行,这时第二行变为首行
      $("#express li:first").remove();
    }else{      //如果第一行还未走出ul,top自减
      top-=1;
    }
  },50);
Copy after login

额外的代码

实现当滚动时,鼠标放置后可以停止,移出时仍可以进行

//当鼠标放置后停止,松开继续走
  $("#express li").hover(function() {    //清除定时
    clearInterval(t);
  }, function() {
    t = setInterval(function () {      //先设置margin-top为0
      $("#express li:first").css("margin-top",top);      //li的高度为25,故这里以25判断第一行是否走出ul。
      if(top<-25){        //如果第一行已经走出ul,将top归零,为下个li做准备
        top=0;        //这句话的意思是,先将首行的top设为0,拷贝该行,放置最后一行
        //注意,如果这里不将第一行的top归零,拷贝后他将保持top=-25的状态,效果就是叠加在最后一行上。
        $("#express li:first").css("margin-top",top).clone(true).appendTo (&#39;#express&#39;);        //移除首行,这时第二行变为首行
        $("#express li:first").remove();
      }else{        //如果第一行还未走出ul,top自减
        top-=1;
      }
    },50);
  });
Copy after login

以上就是对如何利用JavaScript&jQuery实现滚动公告栏(代码实例)的全部介绍,如果您想了解更多有关JavaScript教程,请关注PHP中文网。

The above is the detailed content of How to use JavaScript&jQuery to implement a scrolling bulletin board (code example). For more information, please follow other related articles on the PHP Chinese website!

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

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Chat Commands and How to Use Them
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

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)

Detailed explanation of jQuery reference methods: Quick start guide Detailed explanation of jQuery reference methods: Quick start guide Feb 27, 2024 pm 06:45 PM

Detailed explanation of jQuery reference method: Quick start guide jQuery is a popular JavaScript library that is widely used in website development. It simplifies JavaScript programming and provides developers with rich functions and features. This article will introduce jQuery's reference method in detail and provide specific code examples to help readers get started quickly. Introducing jQuery First, we need to introduce the jQuery library into the HTML file. It can be introduced through a CDN link or downloaded

How to use PUT request method in jQuery? How to use PUT request method in jQuery? Feb 28, 2024 pm 03:12 PM

How to use PUT request method in jQuery? In jQuery, the method of sending a PUT request is similar to sending other types of requests, but you need to pay attention to some details and parameter settings. PUT requests are typically used to update resources, such as updating data in a database or updating files on the server. The following is a specific code example using the PUT request method in jQuery. First, make sure you include the jQuery library file, then you can send a PUT request via: $.ajax({u

How to remove the height attribute of an element with jQuery? How to remove the height attribute of an element with jQuery? Feb 28, 2024 am 08:39 AM

How to remove the height attribute of an element with jQuery? In front-end development, we often encounter the need to manipulate the height attributes of elements. Sometimes, we may need to dynamically change the height of an element, and sometimes we need to remove the height attribute of an element. This article will introduce how to use jQuery to remove the height attribute of an element and provide specific code examples. Before using jQuery to operate the height attribute, we first need to understand the height attribute in CSS. The height attribute is used to set the height of an element

jQuery Tips: Quickly modify the text of all a tags on the page jQuery Tips: Quickly modify the text of all a tags on the page Feb 28, 2024 pm 09:06 PM

Title: jQuery Tips: Quickly modify the text of all a tags on the page In web development, we often need to modify and operate elements on the page. When using jQuery, sometimes you need to modify the text content of all a tags in the page at once, which can save time and energy. The following will introduce how to use jQuery to quickly modify the text of all a tags on the page, and give specific code examples. First, we need to introduce the jQuery library file and ensure that the following code is introduced into the page: &lt

Use jQuery to modify the text content of all a tags Use jQuery to modify the text content of all a tags Feb 28, 2024 pm 05:42 PM

Title: Use jQuery to modify the text content of all a tags. jQuery is a popular JavaScript library that is widely used to handle DOM operations. In web development, we often encounter the need to modify the text content of the link tag (a tag) on ​​the page. This article will explain how to use jQuery to achieve this goal, and provide specific code examples. First, we need to introduce the jQuery library into the page. Add the following code in the HTML file:

How to tell if a jQuery element has a specific attribute? How to tell if a jQuery element has a specific attribute? Feb 29, 2024 am 09:03 AM

How to tell if a jQuery element has a specific attribute? When using jQuery to operate DOM elements, you often encounter situations where you need to determine whether an element has a specific attribute. In this case, we can easily implement this function with the help of the methods provided by jQuery. The following will introduce two commonly used methods to determine whether a jQuery element has specific attributes, and attach specific code examples. Method 1: Use the attr() method and typeof operator // to determine whether the element has a specific attribute

Understand the role and application scenarios of eq in jQuery Understand the role and application scenarios of eq in jQuery Feb 28, 2024 pm 01:15 PM

jQuery is a popular JavaScript library that is widely used to handle DOM manipulation and event handling in web pages. In jQuery, the eq() method is used to select elements at a specified index position. The specific usage and application scenarios are as follows. In jQuery, the eq() method selects the element at a specified index position. Index positions start counting from 0, i.e. the index of the first element is 0, the index of the second element is 1, and so on. The syntax of the eq() method is as follows: $("s

Introduction to how to add new rows to a table using jQuery Introduction to how to add new rows to a table using jQuery Feb 29, 2024 am 08:12 AM

jQuery is a popular JavaScript library widely used in web development. During web development, it is often necessary to dynamically add new rows to tables through JavaScript. This article will introduce how to use jQuery to add new rows to a table, and provide specific code examples. First, we need to introduce the jQuery library into the HTML page. The jQuery library can be introduced in the tag through the following code:

See all articles