All the lines drawn by the line drawing instructions of Html5 Canvas have burrs (such as lineTo, arcTo, strokeRect). This is because the position corresponding to the integer coordinate value in Canvas happens to be the gap between the screen pixels, so w
This article introduces the sample code of canvas ring countdown component and shares it with you. The details are as follows: The effect is as shown in Figure 1: Canvas ring countdown component Canvas ring countdown is a countdown based on Canvas. It is
The preface recommends a hand-drawn style graphics JS library based on Canvas. Rough.jsRough.js is a lightweight (about 8k), Canvas-based library that can draw rough hand-drawn styles. Provides basic capabilities for drawing lines, curves, arcs, polygons,
In the last article, we shared how to use canvas to draw graphics, but the drawings were all static graphics. This week we will learn how to use canvas to draw dynamic graphics. What is animation? Before we draw animation, we must understand what animatio
Problem Symptoms Today when I was developing a mobile H5 page, I encountered the problem that the interface could not return to its original position when the keyboard was retracted on IOS. The problems and symptoms are described in detail below: The page
By uploading pictures of appropriate sizes, users can preview the effect similar to a slideshow by selecting the effect and music of the rendering animation, and finally click to confirm to generate a video, which can be played on headlines or Douyin. Pos
What is requestAnimationFrame? In browser animation programs, we usually use a timer to cycle the target object every few milliseconds to make it move. Now there is good news, browser developers have decided: Hey, why don't we provide such an API in t
There is no best, only better. As the title indicates, this article only wants to share a particle movement effect achieved using Canvas. It feels like a bit of a headline, but from another perspective, it can barely be considered dazzling. Although the c
There is a project where the input box monitors the input in real time and triggers the request. The first idea is to use the onchange() method on the input. I tried it, but it doesn’t work. It will only be triggered after the value change is confirmed, w
Preface During the development of WeChat public accounts, I had no experience with WeChat-related development before, so I fell into pits and climbed into pitfalls. However, it also greatly increased my familiarity with WeChat public and WeChat official d
Background Summary I believe that everyone should have encountered such a need when learning canvas or using canvas in project development: to implement a sketchpad gadget that can be written. Well, I believe that for children who are more familiar with c
This article introduces Html5 video to upload preview pictures and videos, set and preview the poster frame of a certain second of the video, and share it with everyone. The details are as follows: When receiving the request to upload pictures and videos
This is how I make the DIV layout code. I don’t know if it’s clear or not, but let’s take a look. My idea is that in the future, we can use standard parts to assemble the DIV layout of web pages. I divide classes into two types, layout class and style cla
