javascriptbeginner10 minutes

Refactor and Simplify a Function to Calculate Total Price

Improve the readability and maintainability of a simple JavaScript function that calculates the total price of items including tax. The functionality should remain the same while making the code cleaner.

Challenge prompt

You are given a function that calculates the total price for a purchase including tax. The current function works correctly but is written in a verbose and less readable way. Refactor the function to make it simpler and easier to understand, without changing its behavior.

Guidance

• Keep the function's input parameters and output the same.
• Remove unnecessary variables and simplify expressions where possible.
• Use descriptive variable names to clarify meaning.

Hints

• Look for opportunities to combine multiple statements into one expression.
• Consider removing redundant intermediate variables.
• Use arithmetic operations directly in the return statement if possible.

Starter code

function calculateTotalPrice(price, taxRate) {
  let taxAmount = price * taxRate;
  let total = price + taxAmount;
  return total;
}

Expected output

calculateTotalPrice(100, 0.15) === 115

Core concepts

functionsvariablesarithmetic operationscode readability

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