JavaScript final assessment

Reason across the full course, then write and run code for three applied briefs. Your work saves automatically on this device or to your signed-in account.

PART 2 · APPLIED JAVASCRIPT

Solve three realistic programming briefs

Run the program to observe its behavior, then check the required structures. Automated checks are guidance: you still need to test boundary cases and inspect accessible behavior.

0/3 challenges passed

Normalize and total a shopping cart

Turn uncertain input into a trustworthy cart summary without mutating the supplied array. Run several boundary examples and explain rejected data.

validation · arrays · objects · pure functions

Automatic requirements

A summarizeCart(items) function defines the public contract.
The input is checked with Array.isArray().
Quantity and price use explicit integer validation.
An array iteration method computes the result without changing the input.

function summarizeCart(items) {
  // Return { itemCount, subtotalCents }.
  // Every item needs a non-empty name, positive integer quantity,
  // and non-negative integer priceCents.
}

console.log(summarizeCart([
  { name: "Course notes", quantity: 2, priceCents: 1250 },
]));

function summarizeCart(items) {
  // Return { itemCount, subtotalCents }.
  // Every item needs a non-empty name, positive integer quantity,
  // and non-negative integer priceCents.
}

console.log(summarizeCart([
  { name: "Course notes", quantity: 2, priceCents: 1250 },
]));

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JavaScript final assessment

Connect the ideas across 32 lessons and six projects

Solve three realistic programming briefs

Normalize and total a shopping cart

Automatic requirements