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Analysis of slice() method of String object in javascript

This article analyzes the slice() method of String object in Javascript in more detail. Share it for your reference. The specific analysis is as follows: This method intercepts a segment in a string and returns a new string composed of intercepted charact

2025-06-09
Introduction to the method attribute usage of Form form in HTML

1 method is an attribute that specifies how data is sent to the server. 2 It can only be post and get post: The official explanation is to transfer the data to the server through the post session. It is actually submitting data. get: Add the data in the f

2025-06-09
Use js+regex to add links to keywords

It is required to add the disease name in an html script to the link to the disease library, only once, avoid hyperlinks or image links. Initially, I used str.replace('diabetes', ' <a href=...>diabetes</a> '); after searching for a long ti

2025-06-09
Detailed explanation of apply and call functions in JavaScript

The first time I translated a technical article, I laughed at you! The first paragraph of translation is omitted: Function.apply and Function.call in JavaScript. Each JavaScript function has many attached methods, including toString() and ca

2025-06-09
A deep understanding of JavaScript series (48): Object creation mode (Part 2)

This article mainly introduces the next article of the pattern of creating objects. Using various techniques can greatly avoid errors or write very streamlined code. Pattern 6: Function Syntax Sugar Function Syntax Sugar is an extension to quickly add met

2025-06-09
A date formatting function implemented by JavaScript

Since it is often necessary to format dates in work, unlike the backend, there are convenient methods to call. You can define a format method in the date object prototype, see as follows: Copy the code code as follows:// Add format method Date.prototype.F

2025-06-09
Detailed explanation of the method of using cookies (setting, reading, deleting) in javascript

Cookies are a way for clients to store data and can be used to maintain state. 1. Set cookies: a. No expiration time: (If the expiration time is not set, the default is a session-level cookie, and the browser will be closed.) The copy code code is as foll

2025-06-08
Three ways to define functions in JavaScript

In the world of JavaScript, there are many ways to define functions, which is a reflection of JavaScript flexibility, but it is this reason that makes beginners confused, especially for students who do not have a language foundation. As the saying goes, a

2025-06-08
Detailed explanation of dependency injection in JavaScript

The world of computer programming is actually a process of constantly abstracting simple parts and organizing these abstractions. JavaScript is no exception. When we use JavaScript to write applications, do we use code written by others, such as some famo

2025-06-08
A deep understanding of JavaScript series (40): Detailed explanation of the combination mode of design patterns

Introduction Composite mode (Composite) combines objects into a tree structure to represent a "part-total" hierarchy. The combination mode allows users to have consistency in the use of individual objects and combined objects. Common scenarios i

2025-06-08
In-depth analysis of cookies' security issues

The purpose of cookies is to bring convenience to users and add value to the website, and generally does not pose a serious security threat. A cookie file cannot be executed as code, nor does it transmit viruses, it is proprietary to the user and can only

2025-06-08
JS dynamically adds Table's TR and TD implementation method

This example describes the TR and TD implementation method of dynamically adding Table by JS. Share it for your reference. The specific implementation method is as follows: Copy the code code as follows:<html><head><title></title><SCRIPT language="JavaScr

2025-06-08
JavaScript implementation to obtain browser version and operating system type

The code is very concise and the functions are very practical. I won’t talk much nonsense here. I will just give you the code: /** * Created by Administrator on 15-1-12. */function BroswerUtil() {}BroswerUtil = { //

2025-06-08
Use namespace to prevent conflicts from occurring in js to avoid the flooding of global variables

In order to avoid overwriting and conflicts between variables, a namespace can be generated. The namespace is a special prefix, which is implemented through {} objects in js. In different anonymous functions, a different namespace is declared according to

2025-06-08
Methods and examples for calling system commands, shell scripts and Python scripts in Nodejs

Each language has its own advantages. It combines each other with its own strengths to execute the program more efficiently or uses which implementation method is simpler. nodejs uses child processes to call system commands or files. See http://nodejs.org

2025-06-08

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