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JavaScript learning summary: Use canvas to draw the "Doraemon" clock

Preface: I finished reading the canvas canvas of JS book today. I was so happy~ It was my beloved canvas again~ Ouye~ I saw someone suggesting me to draw a blue fat man, right, why did I forget the favorite blue fat man in my childhood? In order to expres

2025-07-12
js to find the implementation code for time difference

var date1=new Date(); //start time var date2=new Date(); //end time var date3=date2.getTime()-date1.getTime() // milliseconds of the time difference// Calculate the number of days of the difference var

2025-07-12
Based on JS, it is possible to jump to the corresponding mobile web page when accessing PC pages on mobile terminals.

If you don’t want to display different styles on the PC and mobile terminals through CSS adaptation, you can only jump to the corresponding mobile website when accessing the PC web page on the mobile terminal. So how to jump? There are also many articles

2025-07-12
Quickly use Bootstrap to build a conveyor belt

bootstrap introduces Bootstrap is a framework that is widely used in front-end development. It was originally a tool within Twitter. After it was opened source, it quickly gained recognition from all parties. This book is based on the latest Bootstrap 3.

2025-07-12
JS display world time example (including major cities in the world)

This article examples illustrate how JS displays world time. Share it for your reference, as follows:<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><TITLE> World Time

2025-07-12
Detailed explanation of JS onkeypress compatibility writing method

It is required to enter the password and press Enter to trigger a background event. It seems to be a very simple requirement, but it encounters many difficulties. There is mainly a password input text box in HTML content and a button to trigger background

2025-07-12
Javascript implements mouse box selection operation not click selection

This article shares with you the example of Javascript to implement mouse box selection operation, which is by no means click to select, for your reference. The specific content is as follows: Code:<html><head></head><style> body{padding:100px;} .fileDiv{

2025-07-12
The second-level linkage effect of drop-down box implemented by js

This article describes the secondary linkage effect of drop-down boxes implemented by js. Share it for your reference, as follows: <script language="JavaScript" type="text/javascript"><!--/* * 说明：将指定下拉列表的选项值清空 * 转

2025-07-12
artDialog+plupload implements multi-file upload

Introduction to Plupload Plupload is developed by developers of TinyMCE, providing a highly available upload plug-in for your content management system or similar upload programs. Plupload is currently divided into a core API and a jQuery upload queue com

2025-07-12
Let’s talk about basic types and reference types in Javascript (recommended)

1. Overview of basic types and reference types The values of data types in js include: basic type values and reference type values Basic data types: undefined;null;boolean;number;string Reference type values: saved in memory, js does not allow direc

2025-07-12
Seven precautions for learning JavaScript [must-read]

Knowledge description: When learning JavaScript, pay attention to the following seven details. When implementing the same function, our code will be easier to understand and more efficient. 1. Simplified code For example: Before creating an object, it was

2025-07-12
Easy way to dynamically add events to objects in JS

In WEB projects, we often encounter dynamically adding events to the corresponding object, as follows, with text box control with id="txtPrice":<div>

2025-07-12
Bootstrap plugin complete collection

Bootstrap plug-in 1. Bootstrap Transition plug-in Transition plug-in provides simple transition effects. If you want to reference the functionality of the plugin separately, you will also need to reference transition.j in addition to other JS files

2025-07-12
A brief discussion on the basic knowledge about dates and time in javascript

Before introducing the Date object, you must first understand some knowledge about date and time. For example, leap years, UTC, etc. A deeper understanding of these will help you better understand the Date objects in javascript. This article will introduc

2025-07-12
NodeJS creates basic applications and applies template engine

The purpose of this time is to build a most basic NodeJS server that can implement functions, which can reflect the NodeJS workflow and basic development framework. Requirements: Nodejs and Express have been installed. 1. Build a basic NodeJS server (expr

2025-07-12

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