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Parameters and Return Values
Parameters let one function work with different inputs, and return sends a result back to the caller. That result can be stored, combined, or passed into another function.
function priceWithTax(price, taxRate) {
return price * (1 + taxRate);
}
const finalPrice = priceWithTax(80, 0.25);
console.log(finalPrice); // 100Practice passing arguments, working with several parameters, and using returned values in later calculations. Logging displays information; returning makes information reusable—an important distinction when functions begin working together.