javascript.md

JavaScript Interview Refresh

Focus on browser fundamentals, event handling, and language quirks to keep your JavaScript interviews sharp.

Cheat Sheet

• Describe the event loop and microtask queue when explaining async behavior.
• Know when to use event.preventDefault() vs returning false in handlers.
• Share how "use strict" impacts this, variable declarations, and silent failures.

Quick Refresh

• Explain event propagation (capture, target, bubble) and how event.preventDefault() differs from returning false.
• Revisit ES modules versus CommonJS and how bundlers/transpilers affect delivery.
• Recall how "use strict" changes scoping, this binding, and silent errors.

Interview Prompts

• Preventing form submission: Compare event.preventDefault() with return false, discuss when each applies, and describe proper separation of concerns for inline handlers vs. addEventListener.
• Async patterns: Walk through promises, async/await, microtasks vs macrotasks, and the event loop narrative.
• State management in the browser: Outline local/session storage, cookies, and when to leverage IndexedDB.

Deep Dive Later

• Read: event.preventDefault() vs. return false on Stack Overflow.
• Practice with 16 Great JavaScript Interview Questions.
• Refresh details in JavaScript "Use Strict".