With Canvas rich text rendering as the carrier, it mainly shares how front-end development deconstructs the whole process in the software design stage with MVC...
Upload pictures need to add watermarking requirements! Through Canvas! First upload a picture, and then generate a picture through the returned absolute address, and then...
In the project of communication experience activity, it is necessary to upload photos on mobile phones. On ios phones with lower versions, there will be...
Canvas and SVG are two major browser-based rendering schemes, and users sometimes struggle between them when choosing a chart library. But when you're struggling, do...
Recently come into contact with the demand, the front end generates a two-dimensional code with the corporate logo, and supports the click to download it....
In daily life, work and study, we must be familiar with spreadsheets. Spreadsheets produce everything from summaries and analyses of work data to electronic invoices...
1. Background BEFORE I wrote an article ES6 handwriting a "color discrimination" small game, feel fun quite good. Some people pointed out that they could...
Translate: translate the coordinate system. It is equivalent to shifting the origin of the coordinates from 0,0 to dx, dy. Rotate (Angle) : rotates the...
Today we're going to show you how to write an image compression and orientation correction plugin, along with uploading and previewing. I believe that in...
Video related projects, sometimes need to take screenshots of the video, the picture is generally added watermark. Here are the watermarking methods for ordinary video...
Modern browsers support playing video through the <video> element. Most browsers can also pass MediaDevices. GetUserMedia () API to access the camera. But even when...
Everyone is familiar with MPVue, which almost obliterates the differences between the browser side and the applet side. However, due to the nature of applets,...
This is the 27th day of my participation in The August More Text Challenge. The audio processing environment and context can control the creation of...
Ctx.gettransform () retrieves the applied transformation matrix of the current Canvas context, returning a DOMMatrix object. Dommatrix.invertself () retrieves the inverted result of the current...