I have some object datas that i want to multiply by a number, the problem is i want all properties or sub properties that matches some names to by multiplied by that number without knowing the actual type of the data
here is an example:
// original api response data
let data = {
id: 4,
price: 100,
discount: 10,
total_price: 90,
create_date: '2024-09-06T14:35:42.759Z',
parent_id: 3,
parent: {
id: 3,
price: 1000,
discount: 0,
total_price: 1000,
create_date: '2024-09-06T13:35:42.759Z',
},
items: [
{
id: 10,
name: 'item 1',
cost: 3,
price: 5,
quantity: 5
},
],
others: {
otherValues: [
{
id: 9,
name: 'other 1',
price: 10,
quantity: 1
},
]
}
}
// calculate function
const calculate = (data, multipler, keys) => {
// the lodash magic
...
}
// calculating the data
let calculated = calculate(data, 1.5, ['price', 'total_price', 'cost'])
/*
expected result:
let data = {
id: 4,
price: 150,
discount: 10,
total_price: 135,
create_date: '2024-09-06T14:35:42.759Z',
parent_id: 3,
parent: {
id: 3,
price: 1500,
discount: 0,
total_price: 1500,
create_date: '2024-09-06T13:35:42.759Z',
},
items: [
{
id: 10,
name: 'item 1',
cost: 4.5,
price: 7.5,
quantity: 5
},
],
others: {
otherValues: [
{
id: 9,
name: 'other 1',
price: 15,
quantity: 1
},
]
}
}
*/
in the example only properties and sub properties that are named ‘price’, ‘total_price’, and ‘cost’ have been multiplied, and the object i provided is one of many that are being sent back that the shapes are different and trying to do the manipulation for each is not a great idea
i tried using lodash map mainly but i could not get it to work
0
A classic iterator. It’s a recursion that recurses into values that are objects, doing its thing. It replaces values inplace, but might as well duplicate the original if you want to keep the original tree.
// calculate function
const calculate = (obj, multiplier, keys) => {
if (!obj) {
return obj
}
Object.keys(obj).forEach(key => {
if (keys.indexOf(key) >= 0) {
obj[key] *= multiplier
}
if (typeof obj[key] === "object") {
obj[key] = calculate(obj[key], multiplier, keys)
}
})
return obj;
}
// original api response data
let data = {
id: 4,
price: 100,
discount: 10,
total_price: 90,
create_date: '2024-09-06T14:35:42.759Z',
parent_id: 3,
parent: {
id: 3,
price: 1000,
discount: 0,
total_price: 1000,
create_date: '2024-09-06T13:35:42.759Z',
},
items: [{
id: 10,
name: 'item 1',
cost: 3,
price: 5,
quantity: 5
}, ],
others: {
otherValues: [{
id: 9,
name: 'other 1',
price: 10,
quantity: 1
}, ]
}
}
// calculating the data
let calculated = calculate(data, 1.5, ['price', 'total_price', 'cost'])
console.log(calculated).as-console-wrapper {
min-height: 100%;
}1