Sum and Product of Array elements using JavaScript

// Function to calculate the sum of an array
function sum(input) {
    if (toString.call(input) !== "[object Array]") return false;

    let total = 0;
    for (let i = 0; i < input.length; i++) {
        if (isNaN(input[i])) {
            continue;
        }
        total += Number(input[i]);
    }
    return total;
}

// Given array
let array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];

// Log the sum to the console
console.log("----Sum of Array----");
console.log(sum(array));

// Function to calculate the product of an array
function product(input) {
    if (toString.call(input) !== "[object Array]") return false;

    let total = 1;
    for (let i = 0; i < input.length; i++) {
        if (isNaN(input[i])) {
            continue;
        }
        total *= Number(input[i]);
    }
    return total;
}

// Given array
let array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];

// Log the product to the console
console.log("----Product of Array----");
console.log(product(array));

// Given array
let arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];

// Function to calculate the sum of two numbers
function sumofArray(sum, num) { 
    return sum + num; 
} 

// Function to log the sum of the array to the console
function myGeeks() { 
    const totalSum = arr.reduce(sumofArray, 0); // Initialize the sum with 0
    console.log("Sum:", totalSum); 
}

// Call the function to log the sum
myGeeks();

// Given array
let arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];

// Function to calculate the product of two numbers
function productofArray(product, num) { 
    return product * num; 
} 

// Function to log the product of the array to the console
function myGeeks() { 
    const totalProduct = arr.reduce(productofArray, 1); // Initialize the product with 1
    console.log("Product:", totalProduct); 
}

// Call the function to log the product
myGeeks();