What are some common hoisting mistakes in JavaScript?

What are some common hoisting mistakes in JavaScript?

Common hoisting mistakes include using variables before declaration, leading to undefined values, and confusing function expressions with declarations.

Can you give me an example of a variable hoisting mistake?

Sure! If you try to log a variable before it's declared, like this: console.log(x); var x = 5;, it will output undefined instead of throwing an error.

What about function hoisting? How does that work?

Function declarations are hoisted completely, so you can call them before they appear in the code. For example, myFunc(); function myFunc() { return 'Hello'; } works fine!

Are there any best practices to avoid these mistakes?

Yes! Always declare variables at the top of their scope and prefer using let and const over var to avoid confusion.