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

Posted by Humoyunmirzo Nosirov
Humoyunmirzo Nosirov
Courses Plus Student 5,154 Points

please anyone , give me some help

Using the filter and reduce methods on the purchaseItems array, add the total price of all the groceries (items with a dept. of groceries). Store the total price in the groceryTotal variable. The correct amount can be seen in the comments below.

app.js 
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 = purchaseItems.filter(purchaseItems => purchaseItems.price > 10)
.reduce((sum, purchaseItems) => sum + purchaseItems.price, 0);
console.log(groceryTotal);
// groceryTotal should be: 9.47
// Write your code below

1 Answer

Steven Parker
Steven Parker
231,007 Points
Steven Parker
Steven Parker
231,007 Points

You're pretty close there! But the instructions said, "add the total price of all the groceries (items with a dept. of groceries)"

It looks like your filter is looking for items with a price over 10 (and there are none) instead of items with a dept of "groceries".