In the previous section, we talked about color and pixels. In fact, in most cases, we don’t need pixel-level operations. We only need to set the overall color. 1. Basic colors Learn while playing in HTML5 (2) - In basic drawing, we mentioned that there are two contextual attributes that can be used to set colors: strokeStyle determines the color of the line you currently want to draw, and fillStyle determines the color you currently want to draw. The color value of the filled area can be a valid string that conforms to the CSS3 color value standard. The examples below all represent the same color. For example: Below we give a simple example, drawing 36 solid circles and 36 hollow circles respectively. When setting the colors for them, we used strokeStyle and fillStyle respectively. The code is as follows: different colors Code highlighting produced by Actipro CodeHighlighter (freewa
1. HTML5 Learn while playing (4)-Changing Colors
Introduction: In the previous section we talked about colors and pixels. In fact, in most cases, we don’t need pixel-level operations, we just need Just set the overall color
##2. Photoshop introductory tutorial: Distort the changing line
#. ##3.
Photoshop Basics: Simple production of changing line effects##Introduction: It seems that many people have asked how to draw a changing line before. They usually say that it is more convenient to use vector software. If you use PS, you can only draw a curve, and then use alt ctrl shift t to move and copy over and over again. However, every line produced in this way The shapes are all the same, which is relatively rigid. After trying it out, I found that it is actually quite simple to use PS to create the changing line effect of vector software: the method is as follows (
4. HTML5 Daily Practice - Application of Canvas Tags - Use of Coordinate Transformation and Paths
Introduction: So far, we have learned a lot of Canvas drawing methods. If we want What should I do if I draw a graph like the one below? We need to deform the rectangle, using coordinate transformation is enough. But when changing graphics drawn using paths, there are more things to consider. because . ...,.
[Related Q&A recommendations]:
javascript - How to implement particle changing animation like this
The above is the detailed content of 4 recommended courses on change. For more information, please follow other related articles on the PHP Chinese website!

There is no difference between HTML5 and H5, which is the abbreviation of HTML5. 1.HTML5 is the fifth version of HTML, which enhances the multimedia and interactive functions of web pages. 2.H5 is often used to refer to HTML5-based mobile web pages or applications, and is suitable for various mobile devices.

HTML5 is the latest version of the Hypertext Markup Language, standardized by W3C. HTML5 introduces new semantic tags, multimedia support and form enhancements, improving web structure, user experience and SEO effects. HTML5 introduces new semantic tags, such as, ,, etc., to make the web page structure clearer and the SEO effect better. HTML5 supports multimedia elements and no third-party plug-ins are required, improving user experience and loading speed. HTML5 enhances form functions and introduces new input types such as, etc., which improves user experience and form verification efficiency.

How to write clean and efficient HTML5 code? The answer is to avoid common mistakes by semanticizing tags, structured code, performance optimization and avoiding common mistakes. 1. Use semantic tags such as, etc. to improve code readability and SEO effect. 2. Keep the code structured and readable, using appropriate indentation and comments. 3. Optimize performance by reducing unnecessary tags, using CDN and compressing code. 4. Avoid common mistakes, such as the tag not closed, and ensure the validity of the code.

H5 improves web user experience with multimedia support, offline storage and performance optimization. 1) Multimedia support: H5 and elements simplify development and improve user experience. 2) Offline storage: WebStorage and IndexedDB allow offline use to improve the experience. 3) Performance optimization: WebWorkers and elements optimize performance to reduce bandwidth consumption.

HTML5 code consists of tags, elements and attributes: 1. The tag defines the content type and is surrounded by angle brackets, such as. 2. Elements are composed of start tags, contents and end tags, such as contents. 3. Attributes define key-value pairs in the start tag, enhance functions, such as. These are the basic units for building web structure.

HTML5 is a key technology for building modern web pages, providing many new elements and features. 1. HTML5 introduces semantic elements such as, , etc., which enhances web page structure and SEO. 2. Support multimedia elements and embed media without plug-ins. 3. Forms enhance new input types and verification properties, simplifying the verification process. 4. Offer offline and local storage functions to improve web page performance and user experience.

Best practices for H5 code include: 1. Use correct DOCTYPE declarations and character encoding; 2. Use semantic tags; 3. Reduce HTTP requests; 4. Use asynchronous loading; 5. Optimize images. These practices can improve the efficiency, maintainability and user experience of web pages.

Web standards and technologies have evolved from HTML4, CSS2 and simple JavaScript to date and have undergone significant developments. 1) HTML5 introduces APIs such as Canvas and WebStorage, which enhances the complexity and interactivity of web applications. 2) CSS3 adds animation and transition functions to make the page more effective. 3) JavaScript improves development efficiency and code readability through modern syntax of Node.js and ES6, such as arrow functions and classes. These changes have promoted the development of performance optimization and best practices of web applications.


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