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Web design tutorial

Seajs study notes

1. Introduction to Seajs, a Web module loading framework that pursues a simple and natural way of writing and organizing code: Sea.js follows the CMD specification and modularizes JS code. Automatic loading of dependencies and concise and clear configurat

2025-01-28
Sample code for displaying and hiding JS pop-up layers

Copy the code code as follows:<script type="text/javascript"> //弹出层的显示 //overlays:为遮罩层的ID //wins:弹出层窗体的ID //弹出层中用于拖动的ID fun

2025-01-28
Javascript simulates earth rotation effect code example

Copy the code code as follows:<!DOCTYPE html><html><head><title> JS simulates earth rotation-Ke Leyi</title></head><body><div><h2> JS simulates earth rotation・Ke Leyi</h2></div>

2025-01-28
Canvas study notes: drawing simple paths

1 Line segment (straight line path) General steps for drawing a line segment: moveTo(x,y) Move the brush to the specified coordinate point (x,y) lineTo(x,y) Use a straight line to connect the current endpoint and the specified coordinate point (x,y) strok

2025-01-28
How to implement function array in javascript

One of the biggest differences between js and languages like java is that functions are also regarded as data and can be operated like an object in java. And since js does not perform type checking, arrays can store anything. So I wondered if functions

2025-01-28
How to create a table in javascript (two ways to draw a table in javascript)

1. insertRow() and insertCell() functions The insertRow() function can take parameters, and the form is as follows: insertRow(index): index starts from 0. This function adds a new row before the row of index, such as insertRow(0), is Add new lines to

2025-01-28
JavaScript implements form verification phone number through regular expressions

JavaScript form verifies phone numbers and determines whether an input is a phone number, which is implemented through regular expressions. Copy the code as follows: //Check phone number function isTel(str){ var reg=/^([0-9]|[/-])+$/g; if(str

2025-01-28
Solution to cross-domain pollution of canvas caused by image resources not under the same domain name

We want to draw a picture, which includes a background image and a dynamically generated QR code. The premise is that the background image is a static resource of the project itself, and the QR code is dynamically generated by the server, and the two are

2025-01-28
A brief discussion on some thoughts on the parabolic motion of images in HTML5

It is common for objects/pictures to move in a parabola or, more accurately, along a Bezier curve. This is a common requirement in H5 development. So how to quickly calculate the movement path based on the design draft is the first problem that developers

2025-01-28
How to implement element picture mirror flip animation effect on canvas

1. To preview the horizontal mirror flipping effect of Canvas pictures, you can click here: The horizontal mirror flipping animation of canvas pictures can be seen by clicking on the picture animation effect on the demomo page. 2. Implementation of image

2025-01-28
html5 layered screen adaptation method

The design is great, this time it is really based on the design draft, because now, any machine is a standard machine according to the design draft! Developer classmates, now you can just read the design draft annotations directly! Screen Adaptation Scree

2025-01-28
Detailed explanation of the problem summary of h5 pages on different ios devices

Recently, I was writing an h5 page embedded in the mini program webview, which is a function of article comments. In the process, I encountered many compatibility issues, and the performance on different models was also very inconsistent, so I summarized

2025-01-28
js accumulation of experience in html DOM element operations

Copy the code as follows: var totalPanels = $(".scrollContainer").children().size(); alert(totalPanels) The result is 2 cumulative

2025-01-27
js timer (execute once, repeat execution)

1. The timer copy code that is executed only once is as follows:<script> //定时器异步运行 function hello(){ alert("hello"); } //使用方法名字执行方法 var t1 = window.setTimeout(he

2025-01-27
A small example of extending the time formatting function of JS Date object

Introduce the following code into your own JS code: Copy the code as follows: Date.prototype.format =function(format){var o = {"M+" : this.getMonth()+1, //month"d+" : this. ge

2025-01-27

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