is just a container for drawing graphics. In addition to attributes such as id, class, and style, it also has height and width attributes. There are three main steps for drawing on the > element: 1. Get the DOM object corresponding to the element, which is a Canvas object; 2. Call the getContext() method of the Canvas object to get a CanvasRenderingContext2D object; 3. .Call the CanvasRenderingContext2D object for drawing. Graphics combination: •globalAlpha: Set or return the current alpha or transparency value of the drawing. This method mainly sets the transparency of the graphics, which will not be introduced in detail here. •globalCompositeOperation: Set or return how the new image is drawn to the existing image. This method has the following attribute values: Here is a small example, you can change the combination effect by clicking: 1. HTML5 canvas basic drawing graphic combination ##Introduction: < /canvas> is just a container for drawing graphics. In addition to attributes such as id, class, style, etc., it also has height and width attributes. There are three main steps for drawing on the > element: 1. Get the DOM object corresponding to the element, which is a Canvas object; 2. Call the getContext() method of the Canvas object to get a CanvasRenderingContext2D object; 3. .Call CanvasRenderi 2. Photoshop An exquisite compass icon ##Introduction: This tutorial introduces how to make crystal icons. It may seem a bit complicated when you first look at the renderings, but once you figure out the structure inside, they are basically composed of similar graphics, and the production methods of many layers are the same. Final effect 1. Create a new 500 * 500 pixel file, fill the background with white, and then drag two lines 3 in the center of the layer. Photoshop design to create a gorgeous and festive Metal embossed Christmas greeting card ## Introduction: Here we focus on the production of the three-dimensional characters and some early graphics And font design, etc. can be slowly developed. Production process: First make a rough combination of text and graphics; then use multiple layers of layer styles to create a metal relief effect [Related Q&A recommendations]: javascript - How to quickly clear Canvas graphics combination mode?
