Syntax - Tasty Web Development Treats
Wes Bos & Scott Tolinski - Full Stack JavaScript Web Developers
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802: Tree Shaking × useMemo vs useCallback × JavaScript Event Loop - STUMP'd
Scott and Wes serve up a gameshow-style quiz with STUMP’d, challenging each other on web development trivia. From the differences between useMemo and useCallback to the intricacies of the JavaScript event loop, join them for a fun and informative session packed with web dev insights! Show Notes 00:00 Welcome to Syntax! 01:17 Brought to you by Sentry.io. 02:03 The longest game of Rock, Paper, Scissors. Round 1 03:22 In React, what is the difference between useMemo and useCallback hooks, and in what scenarios would you choose one over the other? 05:56 Explain the concept of “tree shaking” in modern JavaScript build tools. How does it work, and what are its benefits? Round 2 09:11 In the context of CSS Grid, explain the difference between grid-template-areas and grid-area. 11:34 What is the “Temporal Dead Zone” in JavaScript, and how does it relate to variables declared with let and const Round 3 13:29 Describe the inner workings of the JavaScript event loop, including the roles of the call stack, callback queue, and microtask queue. 17:10 What is the “Shadow DOM” in web components, and how does it differ from the regular DOM? Round 4 20:05 Explain the process of Critical Rendering Path optimization in modern web browsers 26:14 Describe the purpose and functionality of the Intl.Segmenter API in JavaScript. Round 5 30:03 Explain the concept of Web Assembly (WASM) and its role in modern web development. 32:11 Explain the concept of Svelte stores, particularly focusing on the differences between writable, readable, and derived stores. Round 6 35:26 Explain the concept of “code splitting” in modern JavaScript applications. 37:00 Describe advanced techniques for maintaining an accessible focus order in web accessibility. Round 7 45:15 Explain the concept of “Server-Sent Events” (SSE) in web development. 47:37 What’s the difference between contain layout and contain paint? 49:30 Sick Picks & Shameless Plugs. Sick Picks Scott: diskprices. Wes: Slime Tire Sealant. Shameless Plugs Scott: Syntax on YouTube. Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads
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