What is the difference between a regular function declaration and a function expression in JavaScript? How do these differences impact hoisting?

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Utilisateur anonyme · Accepted Answer

Key Differences:
Hoisting:

Function Declaration: Fully hoisted. You can call the function before its declaration in the code.
Function Expression: Only the variable is hoisted, not the function definition. You must define the function before you can call it.
Naming:

Function Declaration: Must have a name.
Function Expression: Can be anonymous or named.
Use Cases:

Function Declarations: Typically used for general-purpose functions that are available throughout the entire scope.
Function Expressions: Often used for callbacks, event handlers, or when defining functions dynamically.

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