Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript JavaScript Array Iteration Methods Combining Array Methods Combining filter() and reduce()

These JavaScript problems are difficult. Can someone tell me what I'm wrong?

Thank you in advance

const purchaseItems = [
        name: 'apples',
        dept: 'groceries',
        price: 2.49
        name: 'bread',
        dept: 'groceries',
        price: 2.99
        name: 'batteries',
        dept: 'electronics',
        price: 5.80
        name: 'eggs',
        dept: 'groceries',
        price: 3.99
        name: 't-shirts',
        dept: 'apparel',
        price: 9.99
let groceryTotal;

// groceryTotal should be: 9.47
// Write your code below

groceryTotal = purchaseItems
    .filter(item => item.price > 10)
    .reduce((sum, price) => sum + item.price, 0);  

Nevermind I figured it out! Thanks

2 Answers

Steven Parker
Steven Parker
221,330 Points

Congratulations on resolving your issue!

For the benefit of other students, there are two issues in the code:

  • the filter should select items in the grocery department instead of items with a price over 10
  • the second parameter of the function in "reduce" should be named "item" instead of "price"

Thanks Steve