In the project, there is a need to use jquery to achieve the sliding effect, so the relevant content is organized as follows. The following introduction is very detailed, with text description and code analysis. Friends who need it can come and learn.
Implementation method one:
.slideUp([duration][,complete])——The target element slides up and is hidden;
.slideDown([duration][,complete])——The target element slides down to display;
.slideToggle([duration][,complete])——If the target element is hidden, slide down to display it, otherwise slide up to hide it;
Note: duration is the time interval for method execution, and complete is the callback function.
<!DOCTYPE html> <html lang="zh_CN"> <head> <meta charset="UTF-8"> <title>滑动效果</title> <script src="js/jquery-2.1.3.min.js"></script> <script src="js/slide.js"></script> <style> img{ width:500px; } </style> </head> <body> <div> <div> <button id="btn1">向上划入隐藏</button> <button id="btn2">向下滑出显示</button> <button id="btn3">向上划入隐藏/向下滑出显示</button> </div> <img src="/static/imghwm/default1.png" data-src="images/2.jpg" class="lazy"/ alt="jquery implements sliding effects code_jquery" > </div> </body> </html>
slide.js code:
/*滑动效果*/ $(document).ready(function(){ //向上滑入 $('#btn1').click(function(){ $('img').slideUp(2000); }); //向下滑出 $('#btn2').click(function(){ $('img').slideDown(2000); }); //切换滑动 $('#btn3').click(function(){ $('img').slideToggle(2000); }); })
Implementation method two:
1. jQuery___ effect (sliding effect)
slideDown(speed, [callback])
Overview
Dynamically displays all matching elements by changing their height (increasing downward), optionally triggering a callback function after the display is complete.
This animation effect only adjusts the height of the element, allowing matching elements to be displayed in a "sliding" manner. In jQuery 1.3, the upper and lower padding and margin will also be animated, and the effect will be smoother.
Parameters
speedString,Number
A string of one of three predetermined speeds ("slow", "normal", or "fast") or a millisecond value representing the animation duration (such as: 1000)
callback (optional)FunctionFunction
Function executed when animation completes
Example
Description:
Slowly slide the paragraph down in 600 milliseconds
jQuery code:
$("p").slideDown("slow");
Description:
Use 200 milliseconds to quickly slide down the paragraph, and then a dialog box will pop up
jQuery code:
$("p").slideDown("fast",function(){ alert("Animation Done."); });
slideUp(speed, [callback])
Overview
Dynamicly hide all matching elements by changing their height (decreasing upwards), optionally triggering a callback function after hiding is complete.
This animation effect only adjusts the height of the element, allowing matching elements to be hidden in a "sliding" manner. In jQuery 1.3, the upper and lower padding and margin will also be animated, and the effect will be smoother.
Parameters
speedString,Number
A string of one of three predetermined speeds ("slow", "normal", or "fast") or a millisecond value representing the animation duration (such as: 1000)
callback (optional)Function
Function executed when animation completes
Example
Description:
Slowly slide the paragraph up in 600 milliseconds
jQuery code:
$("p").slideUp("slow");
Description:
Use 200 milliseconds to quickly slide the paragraph up, and then a dialog box will pop up
jQuery code:
$("p").slideUp("fast",function(){ alert("Animation Done."); });
slideToggle(speed, [callback])
Overview
Toggles the visibility of all matching elements via a height change, and optionally triggers a callback function when the toggle is complete.
This animation effect only adjusts the height of the element, allowing matching elements to be hidden or displayed in a "sliding" manner. In jQuery 1.3, the upper and lower padding and margin will also be animated, and the effect will be smoother.
Parameters
speedString,Number
A string of one of three predetermined speeds ("slow", "normal", or "fast") or a millisecond value representing the animation duration (such as: 1000)
callback (optional)Function
Function executed when animation completes
Example
Description:
Slowly slide the paragraph up or down for 600 milliseconds
jQuery code:
$("p").slideToggle("slow");
Description:
Use 200 milliseconds to quickly slide the paragraph up or down, and then a dialog box will pop up
jQuery code:
$("p").slideToggle("fast",function(){ alert("Animation Done."); });
The above content is the jquery code to implement sliding effects. I hope you like it.

JavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

The shift from C/C to JavaScript requires adapting to dynamic typing, garbage collection and asynchronous programming. 1) C/C is a statically typed language that requires manual memory management, while JavaScript is dynamically typed and garbage collection is automatically processed. 2) C/C needs to be compiled into machine code, while JavaScript is an interpreted language. 3) JavaScript introduces concepts such as closures, prototype chains and Promise, which enhances flexibility and asynchronous programming capabilities.

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.


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

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Zend Studio 13.0.1
Powerful PHP integrated development environment

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool