How to assign variables in loop For NodeJS - node.js

Question

I have an array called req.body.items, which contains always one or more items. And I have to assign some variables according to the quantity of items that it has, like this:
for (x in req.body.items.length) {
var width = req.body.items[x].dimensions.width * 100;
var height = req.body.items[x].dimensions.height * 100;
var weight = req.body.items[x].dimensions.weight;
var depth = req.body.items[x].dimensions.depth * 100;
var quantity = req.body.items[x].quantity;
var sku = req.body.items[x].sku;
};
The problem is that I will have as many "widthes" as items, so if I have 3 items, I must have 3 widthes. And I don't know how to do so. I have searched this, but I only found in Javascript for frontend, I need it to create an API.
It could be just like var width0, var width1, var width2, etc.

Answer 1

let req={
body: {
items: [
{
dimensions: {
width: 1,
height:3,
weight:4,
quantity:7
}
},
{
dimensions: {
width: 5,
height:2,
weight:6,
quantity:8
}
}
]
}
}
let dimensions = req.body.items.reduce((result,item)=>{
Object.entries(item.dimensions).map(([key,value])=>(!!result[key] ? result[key]=[...result[key], value*100]: result[key]=[value*100]));
return result;
},{});
console.log(dimensions);

Answer 2

I believe you need something like this:
var width = [];
var height = [];
var weight = [];
var depth = [];
var quantity = [];
var sku = [];
for (let x in req.body.items.length) {
width.push(req.body.items[x].dimensions.width * 100);
height.push(req.body.items[x].dimensions.height * 100);
weight.push(req.body.items[x].dimensions.weight);
depth.push(req.body.items[x].dimensions.depth * 100);
quantity.push(req.body.items[x].quantity);
sku.push(req.body.items[x].sku);
};
Now, width, height ... are arrays conaining your data.