if i have an array that looks like this :
"orderItems": [
{
"description": "Test",
"identifier": "Test identifier",
"priceCent": 1,
"lengthIn": 10,
"widthIn": 5,
"heightIn": 10,
"weightLbs": 3,
"quantity": 2
},
{
"description": "Test-2",
"identifier": "Test identifier",
"priceCent": 1,
"lengthIn": 10,
"widthIn": 5,
"heightIn": 10,
"weightLbs": 4,
"quantity": 3
}
]
How can I multiply weightLbs and quantity and sum those within the objects? For example:
3 * 2 = 6 4 * 3 = 12
and result total I want is = 18
This is what I have so far, but this only adds weightLbs
return delivery.order.orderItems.reduce((prev, curr) => {
return prev + (curr.totalWeightLbs || 0);
}, 0);
orderItems.reduce((sum, currentItem) => {
return sum + (currentItem.weightLbs * currentItem.quantity);
}, 0);
this will multiply the values and sum them in the reduce accumulator
const dummyArray = [
{
"description": "Test",
"identifier": "Test identifier",
"priceCent": 1,
"lengthIn": 10,
"widthIn": 5,
"heightIn": 10,
"weightLbs": 3,
"quantity": 2
},
{
"description": "Test-2",
"identifier": "Test identifier",
"priceCent": 1,
"lengthIn": 10,
"widthIn": 5,
"heightIn": 10,
"weightLbs": 4,
"quantity": 3
}
];
let sum = 0;
for( i = 0; i < dummyArray.length; i++)
sum += dummyArray[i].weightLbs * dummyArray[i].quantity
console.log(sum)this might work