Gather sand into a tower, make a little progress every day
⭐ Introduction to the column
Front-end Getting Started Tour: Explore the wonderful world of Web development Remember to click the link above or on the right to subscribe to this column Oh Geometry will take you on a front-end journey
Welcome to the front-end introductory tour! This column is tailored for those friends who are interested in web development and have just stepped into the front-end field. Whether you are a complete novice or have some basic developers, here will provide you with a systematic and friendly learning platform. In this column, we will update it every day in the form of questions and answers, presenting selected front-end knowledge points and answers to frequently asked questions. Through the question-and-answer format, we hope to more directly respond to readers' questions about front-end technology, and help everyone gradually build a solid foundation. Whether it's HTML, CSS, JavaScript, or a variety of commonly used frameworks and tools, we'll explain concepts in simple terms and provide practical examples and exercises to reinforce what you've learned. At the same time, we will also share some practical tips and best practices to help you better understand and use various technologies in front-end development.
Not only that, we also regularly launch some practical project tutorials, so that you can apply the knowledge you have learned to actual development. Through the practice of actual projects, you will be able to better understand the workflow and methodology of front-end development, and develop your ability to solve problems and develop independently. We believe that only by continuous accumulation and practice can we truly master front-end development technology. So get ready for the challenge and bravely embark on this front-end introductory journey! Whether you're looking for a career transition, upskilling or personal interest, we're committed to providing you with the highest quality learning resources and support. Let's explore the wonderful world of web development together! Join the front-end introductory journey and become an excellent front-end developer! Let's set sail on the front-end journey
⭐ Browser caching and HTTP headers to control caching
Browser caching (Browser Caching) means that the browser stores copies of downloaded files locally so that these files can be reused in future requests, thereby speeding up the loading of web pages and reducing the burden on the server. Browser cache is usually used to store static resources of pages, such as style sheets, scripts, images, etc.
⭐ HTTP headers control caching
HTTP headers play a key role in controlling browser caching. The following are common HTTP headers that can be used to control caching:
1. Cache-Control
Cache-ControlThe header is one of the most important headers to control caching, it defines the caching behavior. Common Cache-Controlcommands include:
public: Indicates that the response can be stored by a public cache (such as a proxy server).private: Indicates that the response is only available in private caches (such as browser caches) and cannot be stored in public caches.max-age: Specifies the maximum cache time (in seconds) for responses.no-cache: Indicates that the cache must be revalidated (confirm with the server whether it is expired), but the cache can still be used.no-store: Indicates that the response should not be cached and must be obtained from the server every time.
Example:
Cache-Control: public, max-age=3600
2. Expires
ExpiresThe header defines the expiration time of the response, i.e. the browser should use the cache before this date instead of making a request to the server. It is using the HTTP date format.
Example:
Expires: Tue, 15 Jun 2023 08:00:00 GMT
3. Last-ModifiedandIf-Modified-Since
Last-Modifiedheader indicates the last modification date of the response, and the client can use If-Modified-Sincethe header to send the server's last response date so that the server can tell whether the resource has changed.
Example:
Last-Modified: Wed, 10 May 2023 15:30:00 GMT
If-Modified-Since: Wed, 10 May 2023 15:30:00 GMT
4. ETagandIf-None-Match
ETagThe header is a unique identifier for the response, and the client can use If-None-Matchthe header to send back to the server the last response ETagso the server can tell if the resource has changed.
Example:
ETag: "12345"
If-None-Match: "12345"
⭐ Caching strategy
Depending on your needs, you can use these HTTP headers to define different caching policies. For example, for static resources, you can set a longer value max-ageso that the browser can cache these resources to improve performance. For dynamic content, you can disable caching or use no-cache, to ensure that the browser fetches the latest content from the server every time.
Note that cache control is a complex topic that depends on your application needs and resource types. Properly configured caching can significantly improve website performance, but it also needs to be handled carefully to ensure it does not cause problems.
⭐ Written at the end
This column is suitable for a wide range of readers, suitable for front-end beginners; or partners who have never studied the front-end and are interested in the front-end, or back-end students who want to better show themselves and expand some front-end knowledge points during the interview process, so If you have a front-end foundation and follow this column to learn, it can also help you to check and fill in the gaps to a great extent. Since the blogger himself does the content output, if there are any flaws in the article, you can contact me on the left side of the homepage , we make progress together, and at the same time recommend several columns for everyone, interested partners can subscribe: In addition to the columns below, you can also go to my homepage to see other columns;
Front-end games (free) This column will take you into a world full of creativity and fun. By using the basic knowledge of HTML, CSS and JavaScript, we will build various interesting page games together. Whether you're a beginner or have some front-end development experience, this column is for you. We'll start with the basics and guide you step-by-step through the skills you need to build web games. Through practical cases and exercises, you will learn how to use HTML to build page structure, use CSS to beautify the game interface, and use JavaScript to add interactive and dynamic effects to the game. In this column, we'll cover various types of mini-games, including maze games, arkanoid, snake, minesweeper, calculator, airplane wars, tic tac toe, puzzles, mazes, and more. Each project guides you through the building process in clear and concise steps, with detailed explanations and code examples. At the same time, we will also share some optimization tips and best practices to help you improve page performance and user experience. Whether you are looking for an interesting project to exercise your front-end skills, or are interested in web game development, the front-end small game column will be your best choice. Click to subscribe to the front-end game column
Vue3 transparent tutorial [from zero to one] (paid) Welcome to the Vue3 transparent tutorial! This column aims to provide you with comprehensive Vue3-related technical knowledge. If you have some Vue2 experience, this column can help you master the core concepts and usage of Vue3. We'll walk you through building a complete Vue application from scratch, step by step. Through actual cases and exercises, you will learn how to use Vue3's template syntax, component development, state management, routing and other functions. We will also introduce some advanced features, such as Composition API and Teleport, etc., to help you better understand and apply the new features of Vue3. In this column, we'll guide you through each project in clear and concise steps, with detailed explanations and sample code. At the same time, we will also share some common problems and solutions in Vue3 development to help you overcome difficulties and improve development efficiency. Whether you want to learn Vue3 in depth or need a comprehensive guide to building front-end projects, the Vue3 transparent tutorial column will become your indispensable resource. Click to subscribe to the Vue3 transparent tutorial [from zero to one] column
TypeScript Getting Started Guide (Free) is a column designed to help you get started quickly and master TypeScript-related technologies. Through concise and clear language and rich sample code, we will explain the basic concepts, syntax and features of TypeScript in depth. Whether you are a beginner or an experienced developer, you can find a learning path that suits you here. From core features such as type annotations, interfaces, and classes to modular development, tool configuration, and integration with common front-end frameworks, we will cover all aspects comprehensively. By reading this column, you will be able to improve the reliability and maintainability of JavaScript code, and provide better code quality and development efficiency for your own projects. Let's embark on this wonderful and challenging TypeScript journey together! Click to subscribe to the TypeScript Getting Started Guide column
