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weeklyfoo #65 is here: your weekly digest of all webdev news you need to know! This time you'll find 21 valuable links in 5 categories! Enjoy!
? Read it!
- Zod v3.24.0: This is the first version of Zod to implement the Standard Schema spec. by Colin McDonnell / zod, schema / 6 min read
? Good to know
- Building effective agents: Over the past year, we've worked with dozens of teams building large language model (LLM) agents across industries. Consistently, the most successful implementations weren't using complex frameworks or specialized libraries. Instead, they were building with simple, composable patterns. by anthropic.com / ai / 15 min read
- What Every Developer Should Know About Offline-First Apps: All you need to know about local-first apps. by devstarterpacks.com / local-first / 13 min read
- Turing Machines: Interactive article to learn all about Turing Machines. by Sam Rose / turing / 20 min read
- Server-Sent Events (SSE) Are Underrated: Most developers know about WebSockets, but Server-Sent Events (SSE) offer a simpler, often overlooked alternative that deserves more attention. Let's explore why this technology is underrated and how it can benefit your applications. by Igor / sse, http / 5 min read
- DNS Nameservers: The optimal approach for a domain when considering both performance and operational resilience is for the domain to be served by two distinct dual-stack diverse anycast nameservers. by Geoff Huston / dns / 17 min read
- The Adaptive Chief Technology Officer: Understanding the Life Cycle of the CTO Role by chubernetes / leadership / 6 min read
- Principal Engineer Roles Framework: Learn how the principal role is embedded into the system at AWS. by Mai-Lan Tomsen Bukovec / leadership / 21 min read
- OKRs for Evil and Good: My work does not reduce to measurable outcomes. Much of what I accomplish as an engineer and as a developer advocate amounts to creating conditions that make it more likely for the company to succeed. I resist and resent most metrics, yet I don’t mind OKRs the way Honeycomb does them. by Jessica Kerr / okrs / 9 min read
- Logging, the sensible defaults: Logging is a major pillar for well-designed applications. It is not only a large help during development but also critical for failure analysis and debugging. by Daniel Gerlach / logging / 2 min read
- Do you know how much your computer can do in a second?: Let's find out how well you know computers! All of these programs have a variable NUMBER in them. Your mission: guess how big NUMBER needs to get before the program takes 1 second to run. by Julia Evans, Kamal Marhubi / quiz, performance / 2 min read
- Cognitive load is what matters: There are so many buzzwords and best practices out there, but most of them have failed. We need something more fundamental, something that can't be wrong. by Artem Zakirullin / engineering / 22 min read
- Summarizing with Transformers.js: Using transformers.js to summarize a text. by Raymond Camden / ai / 7 min read
? Tools
- SRCL: A open source monospace component library crafted for React interfaces built with variable fonts, React applications, and React websites that prioritize simplicity. by sacred.computer / ui, react
- Stagehand: An AI web browsing framework focused on simplicity and extensibility. by browserbase.com / ai
- AuthorTrail: See all the files you have ever touched in a Git repo by Sarim / git
- SaaS Landing Page: Template for a SaaS Landing Page by Run / landing-page, saas
- gping: Ping, but with a graph by Tom Forbes / cli
- Ghostty: Ghostty is a fast, feature-rich, and cross-platform terminal emulator that uses platform-native UI and GPU acceleration. by ghostty.org / terminal
? Design
- Hotlist 2025: the 25 most popular graphic designers, as voted for by their peers: Need a creative boost? Get inspired by these 25 talented graphic designers whose innovative work has earned them recognition and admiration from their fellow creatives. by Tom May / designers / 22 min read
?? Hacker News
- Predictions for 2025?: 2024 has been a wild ride with lots of development inside and outside AI. by uncomplexity_ / askhn / 217 min read
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JavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

The shift from C/C to JavaScript requires adapting to dynamic typing, garbage collection and asynchronous programming. 1) C/C is a statically typed language that requires manual memory management, while JavaScript is dynamically typed and garbage collection is automatically processed. 2) C/C needs to be compiled into machine code, while JavaScript is an interpreted language. 3) JavaScript introduces concepts such as closures, prototype chains and Promise, which enhances flexibility and asynchronous programming capabilities.

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.


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