What is the difference between two ways of declaring a function?

Function Declaration and Function Expression.

Property	Function Declaration	Function Expression
Hoisting	Is hoisted (available before its declaration in code).	Is not hoisted (not available before its declaration).
Syntax	Declared as a standalone statement.	Declared as part of an expression (e.g., assignment or argument).
Example	function myFunction() {}	const myFunction = function() {}; or const myFunction = () => {};
Usage	Preferred for named standard functions.	Often used for anonymous functions passed as callbacks.
Scope	Available throughout its containing block or script/module.	Scope depends on the expression it is part of.

// Example of Function Declaration
function sayHelloDeclaration() {
  console.log('Hello from Declaration');
}

sayHelloDeclaration(); // Can be called before declaration thanks to hoisting

// Example of Function Expression
const sayHelloExpression = function() {
  console.log('Hello from Expression');
};

sayHelloExpression(); // Can only be called after declaration

// const sayHelloArrow = () => { // Arrow function example (also a Function Expression)
//   console.log('Hello from Arrow Function');
// };