function expression and declaration code example

Example 1: function expression

const getRectArea = function(width, height) {
  return width * height;
};

console.log(getRectArea(3, 4));
// expected output: 12

Example 2: javascript function expression

const mul = function(x, y){
    return x * y;
}; //semicolon needs to be there as it is expression

console.log(mul(10, 20));

Example 3: function expression and function declaration

// Function Declaration
function add(a, b) {
	return a + b;
}
console.log(add(1,2)); //3

// Function Expression
const add = function (a, b) {
	return a + b;
};

console.log(add(1,2)); //3