Understanding Scope and Hoisting is crucial for writing clean and bug-free JavaScript code!
🔹 Scope defines where variables can be accessed:
✅ Global Scope – Accessible everywhere
✅ Function Scope – Exists within a function
✅ Block Scope – Limited to {} when using let or const
🔹 Hoisting moves variable and function declarations to the top before execution:
✅ Function declarations are fully hoisted
⚠️ var variables are hoisted but initialized as undefined
🚫 let & const are hoisted but not accessible before declaration (Temporal Dead Zone)
💡 Best Practices:
✔️ Use let & const instead of var
✔️ Always declare variables at the beginning of their scope
✔️ Understand hoisting to avoid unexpected errors
Have you ever faced a hoisting issue in JavaScript? Drop a comment! 👇💬
#JavaScript #WebDevelopment #Scopes #Hoisting #Coding
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