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Web design tutorial

JavaScript implements web screenshot function

Using JavaScript screenshots, I would like to recommend two open source components here: one is Canvas2Image, which can program the Canvas drawing and programming images of PNG/JPEG/BMP; but it is not enough to just have it. We need to take screenshots of

2025-04-09
Scroll the code upwards the picture

<DIVid=demoonmouseover=ii=1style=OVERFLOW:hidden;HEIGHT:500pxonmouseout=ii=0><DIVid=demo1><divalign=center><ahref=#targe

2025-04-09
Summary of the development and application of geolocation positioning API interface in html5

Several ways to locate geographic location: IP address, GPS, Wifi, GSM/CDMA Geographic location acquisition process: 1. The user opens a web application that needs to obtain a geographic location. 2. The application requests the browser to the geographica

2025-04-09
HTML Table Tag Tutorial (15): Table Title

This mark can directly add the title of the table, and the arrangement properties of the title text can be controlled. Basic syntax<Caption> …</Caption> Syntax explanation<Caption> The content between the tags is the title, and this tag is used in<table>

2025-04-09
JavaScript link method introduction example (add a hyperlink to string)

The link method returns a (italic) string defined using the HTML a tag attribute. Its syntax is as follows: the copy code code is as follows: str_object.link(url) Parameter description: Parameter description str_object

2025-04-09
Introduction to the length attribute usage of JavaScript function

[1,2,3]. length can get 3, "123" . length can also get 3, and those who understand js a little know this. But eval. length , RegExp. length , "".toString. length , 1..toS

2025-04-09
html+css implements the upper right corner of the picture to add a deletion fork and image deletion button

For the sake of record, it may be used in the future, and fellow Taoists in need can also use it. No, the above renderings are the renderings first. You can change the picture in the upper right corner by yourself. I won’t put the picture material on it,

2025-04-09
JavaScript string object fromCharCode method begins with the example (used to convert Unicode values into strings)

JavaScript fromCharCode method The fromCharCode method is used to convert one or more Unicode values into (caps) strings and return the string. The syntax is as follows: Copy the code as follows: String.fromCharCode(num1,

2025-04-09
A string inversion function can implement string inversion

The first method: <script type="text/javascript">var str="abcdeg";function demo(str){var str2="";for(var i=0;i<str.length;i++){str2+

2025-04-09
Intermediate HTML tutorials span and div tags

Given that the purpose of the HTML elementary tutorial is only to teach the skeleton elements of HTML, this intermediate tutorial adds some flesh and blood. They should not be extraordinary, but can further enhance our understanding of HTML and enable us

2025-04-09
Web design tips and codes about form input boxes

1. Add the attribute value hideFocus or HideFocus=true in the input when the button is pressed. 2. Read only the text box content

2025-04-09
Introduction to the features and application scenarios of Node.js

Node.js should be one of the hottest technologies today. This article mainly introduces the characteristics and application scenarios of Node.js. Node.js is a platform built on the Chrome JavaScript runtime, which is used to easily build fast and easy-to-

2025-04-09
A good js html page countdown is accurate to seconds

A good js html page countdown can be accurate to seconds, which is simple, but practical<!doctype html><html><head><meta charset="utf-8"></head><body><DIV id="CountMsg">

2025-04-08
HTML table markup tutorial (14): Table header

In HTML language, you can automatically add titles to tables by marking them. In addition, the first row of the table is called the header, which can also be achieved through HTML tags. Basic syntax<TABLE> ....<TR><TH> Title 1</TH><TH> Title 2</TH><TH> Ti

2025-04-08
Method to get the left and upper offsets of an element

function getElementLeft(element) { var actualLeft = element.offsetLeft; var current = element.offsetParent; while (curre

2025-04-08

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