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Web design tutorial

A brief analysis of HTML5: the role of the 'data-' attribute

When you look at HTML, you often see the use of data-role, data-theme, etc. For example, the header effect can be achieved through the following code:<div data-role=header><h1> I am the title</h1></div> Why write a da

2025-02-23
The GridView implemented by js means that the table header is fixed with scroll bars and can be scrolled

Copy the code as follows: <%@ Page Language="C#" AutoEventWireup="true" %>

2025-02-23
JS code for prohibiting copy web content

Copy code code as follows:<body oncontextmenu = "return false">

2025-02-23
How to get web page background color and font color

To obtain the background color and font color of the web page, the method is as follows: Thought: What is worthy of the color attribute is the rgb color, which is not what we want, so we need to replace the rgb color with hexadecimal color, and first obta

2025-02-23
Detailed explanation of the problem that the canvas drawImage() method does not display the picture drawn

Canvas has a very powerful API called drawImage() (w3c): its main function is to draw pictures, videos, and even other canvases. Question: I came here because of the fame, but missed the mark. When I lowered my head, I saw a big hole on the ground. The th

2025-02-23
JS clear multi-text box and text field sample code

Click the button to clear all text boxes | text fields on the page with Javascript, the code is as follows: Copy the code code as follows:<script type="text/javascript"> <!-- function cls(){ var sum=0; var t = d

2025-02-23
How to use js to select all or not select all

js: Copy the code as follows: function checkAll(name) { var el = document.getElementsByTagName('input'); var len = el.length; for(var i=

2025-02-23
Several commonly used javascript code sharing

The code of the copy will be automatically returned after 1.3 seconds as follows: The code of the copy will be automatically returned after <span id="totalSecond">3</span> seconds<script language="javascript" type="text/javascript"> <!-- var

2025-02-23
Example of using js to display current time

The copy code code is displayed on the front desk of the page as follows:<span id="clock" style="font-size:14px;"></span> The code of the js script copy is as follows: $(document).ready(function () {//The first showTime

2025-02-23
Detailed explanation of new attributes of html5 form

1. The form attribute of the element in the table can put Form in anywhere on the page in H5, and then specify a form attribute for the element. The attribute value is the ID of the form. In this<form id=testform>

2025-02-23
Detailed explanation of the difference between undefined and null in JavaScript

What's a bit strange is that the JavaScript language actually has two values that represent "non": undefined and null. why is that? 1. Similarity In JavaScript, assigning a variable to undefined or null, to be honest, there is almost no di

2025-02-23
In JavaScript, the COM of Microsoft is directly referenced

Copy code code as follows:<html><head><meta http-equiv=Content-Type content="text/html;charset=utf-8"><title> Build document by script

2025-02-23
Another clever idea of realizing the height adaptability of iframe windows

There is a page index.html in domainA. A page in domainB is nested through an iframe. Since the other.html page is displayed in an iframe, and its page content will increase or decrease dynamically, the scrollbar of the iframe needs to be removed. Depend

2025-02-23
The implementation code of html5 drag and drop effect

Drag and drop and drop and drop are a common characteristic, that is, drag to another position after the grabbing object. In HTML5, drag and drop is a standard part, and any element can be dragged and dropped. Internet Explorer 9+, Firefox, Opera, Chrome,

2025-02-23
JavaScript runtime library properties list

Description Language Features In a TextStream file, if the file pointer crosses the end of the line flag, returns True; otherwise, returns False. AtEndOfLine property Returns True if the file pointer is at the end of the TextStream file; otherwise returns

2025-02-23

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