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Web design tutorial

How to use Canvas drawing in html5

1. What is Canvas? Canvas is part of H5 and allows scripting languages to dynamically render images. Canvas defines an area. The width and height of the area can be defined by HTML attributes. JavaScript code can access the area and render dynamic rende

2025-02-12
HTML form component instance code

The HTML form is used to collect different types of user input. The following code is shared with the code of the HTML form component code. Interested friends refer to the nonsense.<!DOCTYPE html><html><head>

2025-02-12
What is html

HTML's development history: HTML English means Hypertext Marked Language, that is, super -text marking language, which is a simple mark language for making superstipping documents. HTML is the inventor Tim Berners-Lee and colleague Daniel W.Connol

2025-02-12
HTML5 PostMessage solves cross -domain and cross -window message transmission solutions

Usually when doing web development, there are several problems that are often encountered in addition to the client and server transmission. Delivery with nested iframe messages 4. The cross -domain data transmission postmessage () issues of the three que

2025-02-12
A brief discussion on the six data types of JavaScript and special points of attention

There are six common data types in js: String type, Null type, Number type, Boolean type, and Object type. 1. The attention points of typeof involve data types. It is inevitable to mention the operator typeof. Note: 1. typeof is an operator, not a method.

2025-02-12
Canvas is a sample code for implementing a small game of shooting airplanes and monsters.

I have only been exposed to canvas for more than a month. It is the first time to completely implement a game process, and the harvest is quite big. Shooting game screenshots are uploaded to the demo first: https://littleyljy.github.io/demo/shootgame/The

2025-02-12
An example of the difference between interval and setTimeOut in javascript

setTimeout(code,millisec) //- Execute code code after the specified time must; millisec must; clearTimeout(setTimeoutId) //- Cancel setTimeout() setInterval(

2025-02-11
JS code that dynamically changes the background color of the web page when selected by the mouse

Implemented using Javascript, click the corresponding color with the mouse to dynamically change the background color of the web page. This is the screenshot. The corresponding Javascript source code is: Copy the code as follows: var hex = new Array(6)hex

2025-02-11
Examples of using INDEXEDDB database in html5

In the local storage of HTML5, there is a database called IndexedDB. This database is a NOSQL database stored on the client that can store a large amount of data. From the previous part: HTML5 advanced series: web storage, we know web storage

2025-02-11
Practical example of html5 recording function

Origin Due to project needs, we need to implement the recording function on the web side. At the beginning, there were two solutions found, one was through iframe, and the other was the getUserMedia api of html5. Since our recording function does not need

2025-02-11
An example of the difference between $.each and $().each

The difference between $.each() and $().each, $.each is a general iterative function that can be used to iterate objects and arrays approximately. This function and $().each are dedicated to iterating and executing. jquery object function. This function c

2025-02-11
js automatically finds the menu of select drop-down and selects (sample code)

The code copy is as follows: function find_select(name){var select = document.getElementsByName(name);var find_str = document.getElementById

2025-02-11
Detailed explanation of module analysis rules and summary of module usage in seajs

The seajs github module identification has been relatively clear. But it is not covered in everything, especially when you need to hand-written [module ID] and [module dependency], or when you write your own automation tool to transport (ps:spm seems to b

2025-02-11
Summary of 7 JS basic knowledge

1. How to add attributes to an object? Method 1: var b = {};b["name"] = "test";delete b.name Delete the attributes of the object Method 2: b.name = "test"; 2. How to determine whether a variable is declared? typeof(a) ===&quo

2025-02-11
Recalculation time 60 refresh the js code of the web page

The code copy is as follows:<html xmlns="http://www.w3.org/1999/xhtml"><head>

2025-02-11

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