Function explanation

// Create a function called "add"
function add(num1, num2) {
    var result = num1 + num2
    
    return result // <----- Returning from the function
}

var result = add(1, 2) // <----- Called the function. "result" holds a 3

var result2 = add(3, 4) // <----- Called the function again. "result2" holds a 7