What are the best practices for hoisting in JavaScript?

What are the best practices for hoisting in JavaScript?

Hoisting in JavaScript refers to the behavior where variable and function declarations are moved to the top of their containing scope. Best practices include declaring variables at the top of their scope and using 'let' and 'const' instead of 'var' to avoid issues.

Can you explain why using 'let' and 'const' is better than 'var'?

Yes! 'let' and 'const' have block scope, which helps prevent issues related to variable hoisting and redeclaration that can occur with 'var'. This leads to cleaner and more predictable code.

What are some common mistakes developers make with hoisting?

Common mistakes include using variables before they are declared, which can lead to undefined values, and relying on 'var' for variable declarations, which can cause unexpected behavior due to hoisting.

How can I avoid hoisting issues in my code?

To avoid hoisting issues, always declare your variables at the top of their scope, use 'let' and 'const', and initialize variables before use.