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Learning notes for callback functions in js

What is the callback function? I really don’t know how to use and function the js callback function before learning it. In the following article, I will introduce to you the students the example of my learning callback function. Students who need to know

2025-04-17
HTML5 Web storage method localStorage and sessionStorage for local data storage case application

Comment: localStorage (local storage), can store data for a long time, without time limit, one day, one year, two years or even longer, data can be used, sessionStorage (session storage), only before the browser is closed, and it can be used when creating

2025-04-17
WAP mobile phone picture sliding switch special effects without css3 element js script writing

There are many such examples on the Internet, but they all use other components to make the code confusing; there is also the use of transform in css3: translate(x,y); mobile elements, but I found that it was almost done on devices that do not support css

2025-04-17
Node Supervisor is used in node.js development to monitor file modification and automatically restart the application

When developing or debugging Node.js applications, when you modify the js file, you always have to press CTRL+C to terminate the program and then restart it. Even if you modify a little small parameter, you always have to repeat these annoying operations

2025-04-17
JavaScript fontcolor method beginner example (display strings according to specified colors)

JavaScript fontcolor method The fontcolor method returns a string with color defined using the color attribute in the HTML font tag. Its syntax is as follows: the code copy is as follows: str_object.fontcolor( color ) parameter

2025-04-17
Style trigger effect of web page input box

This example mainly learns two parameters onblur and onFocus. Because these two parameters are rarely encountered before, baidu understands that onblur is an event triggered when the control loses focus, and onFocus is an event triggered when it becomes t

2025-04-17
JavaScript styles through element ID and name

1. Description (1) Return a reference to the element or node document.getElementById("tr_th") (2) Return a reference to a group of elements or node document.getElementsByTagName("

2025-04-17
After the css is loaded, it will automatically determine whether the page will be added with a css or js file.

Recently, I am writing a project framework and writing a JQueryMessageBox class to use the dialog() in jquery ui to display the message box. In order to make the method easy to call, an automatic judgment page is added whether ui.js and ui.css are added.

2025-04-17
HTML5 vs XHTML2

Comment: Most people use HTML 4 and XHTML 1 to write web pages. Relatively few HTML enthusiasts understand the concept of semantic HTML, verify HTML structure, and improve accessibility of documents. High-quality HTML documents are the result of repeated

2025-04-17
Canvas Study Notes 1 in html5 - The size of the artboard and the actual display size

Comment: When writing width and height on canvas in canvas, it is the actual artboard size of canvas. By default, width is 300px and height is 150px. Next, please introduce it in detail. Interested friends can refer to the following: When writing width on

2025-04-17
A brief introduction to HTML5 tag code introduction to HTML5 tag

Comment: This article mainly introduces HTML5 tags, which are different from previous tags. They are simpler and more convenient. HTML is the core markup language that people must use for communication and communication on the World Wide Web. The latest v

2025-04-17
Html5 game development: Ping Pong game example (I)

Comment: It is a ping-pong game with 2 players using a keyboard competition; in this chapter we will: 1. Prepare development tools 2. Build our first game - Ping Pong 3. Learn to use the Jquery JavaScript library for basic positioning 4. Get keyboard inpu

2025-04-17
Example of calculating script execution time in PHP using microseconds

In PHP, most time formats are represented by UNIX timestamps, and UNIX timestamps are units of measurement time in s (seconds) as the smallest unit. This is not accurate enough for some applications, so microtime() can be called to return the current UNIX

2025-04-17
HTML Advanced Tutorials Affinity Connection

Users who do not or cannot use the guide device can use the shortcut key tab key to open the connection, and they must also have a logical tab order. Although HTML is linear, the tabindex attribute allows you to define the order of its shortcut keys, and

2025-04-17
How to convert Chinese to utf-8 in html

In HTML, good learning in Chinese can be expressed as good learning in the project, and it is necessary to connect to SMS alarms. The data return requirement of SMS alarm is utf8. Later, I continued to communicate and found that what I want is html-utf8.

2025-04-17

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