Javascript Function To Get The Difference Between Two Numbers

Are you looking to calculate the difference between two numbers in JavaScript but not sure where to start? Don't worry, we've got you covered with a straightforward guide on how to create a simple JavaScript function that can do just that.

To begin, let's understand the concept of finding the difference between two numbers. The difference between two numbers is essentially the result of subtracting one number from the other. With this in mind, we will create a custom JavaScript function that takes two numbers as input and returns the absolute difference between them.

Here's a step-by-step guide to create the JavaScript function:

1. Define the Function:

function getDifference(num1, num2) {
  return Math.abs(num1 - num2);
}

In this function, we utilize the `Math.abs()` method to ensure that the result is always a positive value, regardless of the order of the input numbers. The `Math.abs()` method returns the absolute value of a number, which is crucial for calculating the difference accurately.

2. Testing the Function:
Let's test the `getDifference` function with some sample inputs:

const result1 = getDifference(10, 5);
console.log(result1); // Output: 5

const result2 = getDifference(5, 10);
console.log(result2); // Output: 5

As demonstrated in the example above, the function correctly calculates the absolute difference between the two numbers provided, ensuring an accurate result.

3. Considerations:
Remember, this function assumes that you are passing valid numbers as input. If non-numeric values are supplied, unexpected behavior may occur. It's always a good practice to include validation logic in your function if needed.

4. Optional Enhancement:
If you want to add an additional check to handle non-numeric inputs, you can modify the function as follows:

function getDifference(num1, num2) {
  if (typeof num1 !== 'number' || typeof num2 !== 'number') {
    return 'Please provide valid numbers.';
  }
  return Math.abs(num1 - num2);
}

By including this simple check, you can ensure that the function provides a meaningful response when non-numeric values are passed as arguments.

In conclusion, creating a JavaScript function to get the difference between two numbers is a practical and straightforward task. By following these steps and understanding the underlying logic, you can easily implement this functionality in your projects. Don't hesitate to experiment with the function and tailor it to suit your specific requirements. Happy coding!