Simple implementation method of jQuery barrage effect
This article mainly introduces in detail the relevant information for simply realizing the jQuery barrage effect. I hope it can help you.
When you want to write a barrage case, you must first know what to do at each step.
After setting up the framework first, you should be prepared to perform the following steps when sending a barrage:
Get the content to be sent to the barrage, that is, get the content entered in the text box content. Generate an element through jquery's var str = $("#ID of the text box").val();
: Generate an element using jQuery's var createSpan =$("") span element for sending.
Assign a value to the span just created, that is, the value in the text box obtained createSpan.text(str);
Set the element Animation effects make elements move. Use jQuery's animate (css style value, time, method to call after executing animation). After executing the animation, you have to manually remove the elements you just added.
There are many details in it, you will be rewarded if you look carefully!
<!DOCTYPE html>
<html>
<head>
<meta charset = "utf-8" />
<title>弹幕案例</title>
<script src = "http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<script>
$(function(){
var boxDom = $("#boxDom");
//var domContent = $("#domContent");
var top, right;
var pageWidth = parseInt($(document).width());
var pageHeight =parseInt($(document).height());
//点击按钮
$("#btn").bind("click",auto);//按钮绑定方法
//按下回车
document.onkeydown = function(){
if(event.keyCode == 13){
auto();
}
}
function auto(){
//1.获取输入的字符串
var str = $(".text").val();
//2.生成一个元素
var createSpan = $("<span class = 'string' ></span>");
//3.给生成的元素赋值
createSpan.text(str);
//为了页面友好，清空刚刚输入的值
$(".text").val("");
//生成元素一个随机的位置，为了使每条弹幕都出现在屏幕上不同的位置
top = Math.floor(Math.random()*pageHeight);
createSpan.css({"top":top, "right": -400, "color": getRandomColor()});
boxDom.append(createSpan);
//4.设置元素的动画效果，animate(css样式值，时间， 执行完动画调用的方法)
//页面上有N个span，只让最后一个动起来
var spandom = $("#boxDom>span:last-child");//找到最后一个span
spandom.animate({"right":pageWidth+300},10000,function(){
//移除元素
$(this).remove();
});
}
//定义一个可以生成随机颜色的方法,可以使每条弹幕的颜色不同
function getRandomColor(){
var colorArr = ['1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'];
var color = "";
for(var i = 0; i < 6; i++){
color += colorArr[Math.floor(Math.random()*16)];
}
return "#"+color;
}
});
</script>
<style type="text/css">
html,body{
margin: 0px;
padding: 0px;
width: 100%;
height: 100%;
font-family: "微软雅黑";
background: #ccc;
}
.boxDom{
width: 100%;
height: 100%;
position: relative;
overflow: hidden;
}
.idDom{
width: 100%;
height: 60px;
background:#666;
position: fixed;
bottom: 0px;
}
.contet{
width: 500px;
height: 40px;
position: absolute;
top: 0px;
right: 0px;
bottom: 0px;
left: 0px;
margin: auto;
}
.title{
display: inline;
font-size: 24px;
vertical-align: bottom;
color: #ffffff;
padding-left: 300px;
}
.text{
width: 300px;
height: 30px;
border:none;
border-radius:5px;
font-size: 20px;
margin-left:60px;
}
.btn{
width: 60px;
height: 30px;
color: #ffffff;
background-color: red;
border:none;
font-size:16px;
margin-left:60px;
margin-top: 20px;
}
.string {
width: 300px;
height: 40px;
margin-top: 20px;
position: absolute;
color: #000;
font-size: 20px;
font-family: "微软雅黑";
}
</style>
</head>
<body>
<p class = "boxDom" id = "boxDom">
<img src="../images/bg_2.jpg" style="width:100%; height:100%" />
<p id = "idDom" class = "idDom">
<p class = "content">
<p class = "title"> 说点什么:</p>
<input type = "text" class = "text"/>
<button type = "button" class = "btn" id = "btn" >发送</button>
</p>
</p>
</p>
</body>
</html>The renderings are as follows:
JavaScript implementation of simple barrage effect example analysis
Code implementation of WeChat applet barrage
The above is the detailed content of Simple implementation method of jQuery barrage effect. For more information, please follow other related articles on 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
1386
52
How to write a novel in the Tomato Free Novel app. Share the tutorial on how to write a novel in Tomato Novel.
Mar 28, 2024 pm 12:50 PM
Tomato Novel is a very popular novel reading software. We often have new novels and comics to read in Tomato Novel. Every novel and comic is very interesting. Many friends also want to write novels. Earn pocket money and edit the content of the novel you want to write into text. So how do we write the novel in it? My friends don’t know, so let’s go to this site together. Let’s take some time to look at an introduction to how to write a novel. Share the Tomato novel tutorial on how to write a novel. 1. First open the Tomato free novel app on your mobile phone and click on Personal Center - Writer Center. 2. Jump to the Tomato Writer Assistant page - click on Create a new book at the end of the novel.
How to enter bios on Colorful motherboard? Teach you two methods
Mar 13, 2024 pm 06:01 PM
Colorful motherboards enjoy high popularity and market share in the Chinese domestic market, but some users of Colorful motherboards still don’t know how to enter the bios for settings? In response to this situation, the editor has specially brought you two methods to enter the colorful motherboard bios. Come and try it! Method 1: Use the U disk startup shortcut key to directly enter the U disk installation system. The shortcut key for the Colorful motherboard to start the U disk with one click is ESC or F11. First, use Black Shark Installation Master to create a Black Shark U disk boot disk, and then turn on the computer. When you see the startup screen, continuously press the ESC or F11 key on the keyboard to enter a window for sequential selection of startup items. Move the cursor to the place where "USB" is displayed, and then
How to recover deleted contacts on WeChat (simple tutorial tells you how to recover deleted contacts)
May 01, 2024 pm 12:01 PM
Unfortunately, people often delete certain contacts accidentally for some reasons. WeChat is a widely used social software. To help users solve this problem, this article will introduce how to retrieve deleted contacts in a simple way. 1. Understand the WeChat contact deletion mechanism. This provides us with the possibility to retrieve deleted contacts. The contact deletion mechanism in WeChat removes them from the address book, but does not delete them completely. 2. Use WeChat’s built-in “Contact Book Recovery” function. WeChat provides “Contact Book Recovery” to save time and energy. Users can quickly retrieve previously deleted contacts through this function. 3. Enter the WeChat settings page and click the lower right corner, open the WeChat application "Me" and click the settings icon in the upper right corner to enter the settings page.
How to set font size on mobile phone (easily adjust font size on mobile phone)
May 07, 2024 pm 03:34 PM
Setting font size has become an important personalization requirement as mobile phones become an important tool in people's daily lives. In order to meet the needs of different users, this article will introduce how to improve the mobile phone use experience and adjust the font size of the mobile phone through simple operations. Why do you need to adjust the font size of your mobile phone - Adjusting the font size can make the text clearer and easier to read - Suitable for the reading needs of users of different ages - Convenient for users with poor vision to use the font size setting function of the mobile phone system - How to enter the system settings interface - In Find and enter the "Display" option in the settings interface - find the "Font Size" option and adjust it. Adjust the font size with a third-party application - download and install an application that supports font size adjustment - open the application and enter the relevant settings interface - according to the individual
How to implement dual WeChat login on Huawei mobile phones?
Mar 24, 2024 am 11:27 AM
How to implement dual WeChat login on Huawei mobile phones? With the rise of social media, WeChat has become one of the indispensable communication tools in people's daily lives. However, many people may encounter a problem: logging into multiple WeChat accounts at the same time on the same mobile phone. For Huawei mobile phone users, it is not difficult to achieve dual WeChat login. This article will introduce how to achieve dual WeChat login on Huawei mobile phones. First of all, the EMUI system that comes with Huawei mobile phones provides a very convenient function - dual application opening. Through the application dual opening function, users can simultaneously
The secret of hatching mobile dragon eggs is revealed (step by step to teach you how to successfully hatch mobile dragon eggs)
May 04, 2024 pm 06:01 PM
Mobile games have become an integral part of people's lives with the development of technology. It has attracted the attention of many players with its cute dragon egg image and interesting hatching process, and one of the games that has attracted much attention is the mobile version of Dragon Egg. To help players better cultivate and grow their own dragons in the game, this article will introduce to you how to hatch dragon eggs in the mobile version. 1. Choose the appropriate type of dragon egg. Players need to carefully choose the type of dragon egg that they like and suit themselves, based on the different types of dragon egg attributes and abilities provided in the game. 2. Upgrade the level of the incubation machine. Players need to improve the level of the incubation machine by completing tasks and collecting props. The level of the incubation machine determines the hatching speed and hatching success rate. 3. Collect the resources required for hatching. Players need to be in the game
Quickly master: How to open two WeChat accounts on Huawei mobile phones revealed!
Mar 23, 2024 am 10:42 AM
In today's society, mobile phones have become an indispensable part of our lives. As an important tool for our daily communication, work, and life, WeChat is often used. However, it may be necessary to separate two WeChat accounts when handling different transactions, which requires the mobile phone to support logging in to two WeChat accounts at the same time. As a well-known domestic brand, Huawei mobile phones are used by many people. So what is the method to open two WeChat accounts on Huawei mobile phones? Let’s reveal the secret of this method. First of all, you need to use two WeChat accounts at the same time on your Huawei mobile phone. The easiest way is to
PHP Programming Guide: Methods to Implement Fibonacci Sequence
Mar 20, 2024 pm 04:54 PM
The programming language PHP is a powerful tool for web development, capable of supporting a variety of different programming logics and algorithms. Among them, implementing the Fibonacci sequence is a common and classic programming problem. In this article, we will introduce how to use the PHP programming language to implement the Fibonacci sequence, and attach specific code examples. The Fibonacci sequence is a mathematical sequence defined as follows: the first and second elements of the sequence are 1, and starting from the third element, the value of each element is equal to the sum of the previous two elements. The first few elements of the sequence
