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41 practical JavaScript tips that web developers must collect

The practical JavaScript skills that web developers must collect for your reference. The specific content is as follows 1. The right mouse button oncontextmenu=”window.event.returnValue=false” will be completely blocked.

2025-07-24
node.js cookie-parser middleware introduction

I previously joined a study notebook group to share my learning results through study notes. Send one here too. When we write a web, we will inevitably need to use cookies. Since node.js has the express web framework, we can easily build websites. When us

2025-07-24
Implement image cropping based on native JS

Below is an introduction to the function of the image cropping I wrote myself: you can use the mouse to drag and generate the cropping box to change the size of the cropping box Click to confirm. Return to the principle of cropping data. There are two way

2025-07-24
jqGrid study notes - Advanced chapter (1)

Add the required buttons in the browsing navigation bar<!DOCTYPE html><html><head><meta charset="utf-8" /><title> DEMO</title>

2025-07-24
JavaScript implements single-linked list and double-linked list structure under Node.js environment

The JavaScript implementation of single linked list (LinkedList) npmjs related libraries: complex-list, smart-list, and singly-linked-list programming ideas: The add method is used to append elements to the tail of the linked list, and is implemented by t

2025-07-24
Methods for uploading multiple files and limiting files in SWFUpload

This article describes the method of uploading multiple files and limiting the number of files in SWFUpload. I will share it with you for your reference. The details are as follows: SWFUpload is a client file upload component based on flash and JavaScript

2025-07-24
Classic examples of the JavaScript language (compiled)

Data type JavaScript is a weak-type language, but it is not without types. JavaScript can recognize the following 7 different types of values: Basic data type 1.Boolean2.Number3.String4.null5.undefined6.SymbolObjectec

2025-07-24
AngularJS directive detailed introduction

AngularJS Directive AngularJS extends HTML with new properties called directives. AngularJS adds functionality to the application through built-in instructions. AngularJS allows you to customize directives. AngularJS directive AngularJS directive is an ex

2025-07-24
Bootstrap rich text component wysiwyg data is saved to mysql

Bootstrap provides a rich text component called wysiwyg, which is used to display and edit rich text data, but it is unknown how to save the edited data to the MySQL database. In addition, it is not known how to display the data in mysql database to wysiw

2025-07-24
Method of automatically completing search boxes using Bootstrap typeahead plug-in

This is one of the disadvantages of posting codes: the search box is almost broken by netizens! ! ! Some people deliberately enter spaces, some people enter or 1=1, some people alert, some people enter html... and it seems that they are still playing, so

2025-07-24
JS traversal of all object properties and implementation methods on page

Javascript example for...in loop:<html><head><title> An example Javascript using a for...in loop</title></head><body>

2025-07-24
Implement autocomplete automatic form completion based on bootstrap plug-in

Based on the bootstrap plug-in, autocomplete automatically completes the form, providing script code, use cases, and backend server (php). There are some things that are not explained clearly in the original text, I hope it can help everyone. First of all

2025-07-24
A brief discussion on the MVC structure and MVVM structure of JavaScript front-end development

MVCModelViewController (MVC) is a computer user interface development model that separates information presentation logic and user interaction; the Model contains application data and business logic; the Controller is responsible for converting user input

2025-07-24
JavaScript sort array sort method and self-implemented sort method summary

The introduction sorts an array, which is a very common requirement. Especially in the backend. Of course, the frontend also has this requirement. Of course, there is an ready-made method for sorting arrays. It is the sort() method. Let's take a look

2025-07-24
The simplest js code to implement select secondary linkage drop-down menu

This example shares the js implementation select secondary linkage drop-down menu for your reference. The specific content is as follows <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String pa

2025-07-24

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