calculateAreaKite()

Step 1: Understanding the Problem Statement and Requirements

Before we write our function, we need to understand what it needs to do. The aim here is to build a function calculateAreaKite that can calculate the area of a kite. The formula to calculate the area of a kite is (diagonal1 * diagonal2) / 2. The function should take two arguments which are the two diagonals of the kite.

Step 2: Declare the Function and the Parameters

Next, we need to declare the function and its parameters. In JavaScript, we can declare a function using the function keyword followed by the name of the function. We're calling our function calculateAreaKite, and we're supplying it with two parameters diagonal1 and diagonal2.

function calculateAreaKite(diagonal1, diagonal2) {
}

Step 3: Calculation of the Kite Area

Inside the function, we will write the mathematical formula for calculating the area of a kite. We will multiply diagonal1 and diagonal2 then we divide the result by 2.

function calculateAreaKite(diagonal1, diagonal2) {
    let area = (diagonal1 * diagonal2) / 2;
}

Step 4: Returning the Result

The function currently finds out the area but doesn't give that information back to us. To do this, we will need to use JavaScript's return keyword.

function calculateAreaKite(diagonal1, diagonal2) {
    let area = (diagonal1 * diagonal2) / 2;
    return area;
}

Step 5: Testing the function

Now, our function should be working correctly. Let's test the function. If a kite has diagonals of lengths 5 units and 6 units, then our function should return 15 because the area of a kite is (5*6)/2 = 15 square units.

console.log(calculateAreaKite(5, 6));  // 15

Conclusion

In this tutorial, we walked through coding a JavaScript function to calculate the area of a kite. We declared a function, implemented the formula for calculating a kite's area, returned the result, and tested our function to make sure it works. Here is our final function:

function calculateAreaKite(diagonal1, diagonal2) {
    let area = (diagonal1 * diagonal2) / 2;
    return area;
}

Remember, to practice and experiment with code as much as you can while learning programming. Happy coding!