JavaScript Coding Day 1 | Overview, JavaScript Engine, Variables
✅ Lesson Note : https://chirucodes.blogspot.com/2025/11/ja...
✅ Run Codes on NextLeap : https://nextleap.app/online-compiler/javas...
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*What You'll Learn & Timestamps:*
*[00:00:11]* The core problem: How does human-readable JS become machine code?
*[00:01:46]* The secret to speed: Understanding *JIT Compilation* (Hybrid Interpreter & Compiler)
*[00:02:35]* Inside the **JavaScript Engine**: Parser, Interpreter, Profiler & Compiler
*[00:04:30]* Introduction to **Variables**: The labeled box analogy
*[00:05:02]* When to use *`let` vs `const`* (and why to avoid `var`)
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