Programming VIP

Background analysis Traditional html does not support definitions of structures such as expressions, branch statements, looping statements, etc. To compensate for the shortcomings of many front-end frameworks, the template engine enhances the functionality of html by adding custom attributes to html elements and then processing html custom ...

preface Original intention:   Sort out the JavaScript tips commonly used in work and share them with you. I hope it can help you to improve development efficiency in your work. Suitable for people:   Front end primary development, big guys detour. 1. Function parameter default value Before Es6, if we want to write the default valu ...

It looks like a lot of work. Later, I was thinking, since the web side can add a gray effect to the whole page, should our app also be ok? How do we add a grayscale effect to the app page? Under normal circumstances, our app page is actually drawn by Canvas, right? The corresponding API of Canvas must also support grayscale. So is it OK fo ...

HTML Basics - Summary of common tags 1 Title Tag <h1>...</h1> ...... <h6>...</h6> Display text in a prominent manner on the page characteristic: The font size changes, h1 is the largest and h6 is the smallestThe fonts are boldExclusive rowVertical distance from top to bottom Properties: align sets the horizontal a ...

First, let's look at the effect of an East: This case can be divided into three functional modules: The mouse passes through the small picture box, the mask layer and the large picture box are displayed, and leaves the hidden mask layer and the large picture box.The mask layer follows the mouse.Move the mask layer and the big picture follows ...

This article records common tool classes. record Borders: // Set border <span class="border"></span> <span class="border-top"></span> <span class="border-right"></span> <span class="border-bottom"></span> <span class="border-left"></span> // Remove border <span class="border-0"& ...

The learning resources for this article come from "Graphics, Animation and Game Development of HTML5 Canvas Core Technologies" Try not to use setInterval and setTimeout to animate, but rather use the requestAnimationFrame() method to let the browser decide the frame rate on its own. Because browsers differ in the implementation of ...

canvas tags for HTML5 preface text What is canvas Basic use of canvas canvas element Rendering context Test support canvas drawing concept Coordinate space Draw rectangle Draw path Draw arc arc example 1 arc example 2 arc example 3 Add canvas style fillStyle strokeStyle Draw text Add text sty ...

In this paper, Apollo will introduce ten "little helpers" for your little buddies, each with unique skills such as blurring, compressing, cropping, rotating, synthesizing, and comparing.I'm sure you'll be able to cope with most picture processing scenarios easily once you know them. But before ...

1.hasClass() //Determine whether a class exists function hasClass(element, value) { var cls = value || ''; //\s Matches any white space characters, including spaces, tabs, page breaks, and so on if (cls.replace(/\s/g, '').length == 0) { return false; //Returns false when no parameter is returned ...