CODEWITHSUNDEEP
javascriptobjectlodash
Emergard
Emergard

Reputation: 115

How to remove some elements in an object array using Lodash

I'll just ask on how to remove some elements in an object array using lodash. 

var fruits = [
  { id: 1, name: 'Apple', price: 55, qty: 3, status: 'ripe' },
  { id: 2, name: 'Banana', price: 55, qty: 4, status: 'ripe' },
  { id: 3, name: 'Pineaple', price: 55, qty: 2, status: 'ripe' }
];

How will I remove the qty and status in all object array so it will look like this

[
  { id: 1, name: 'Apple', price: 55 },
  { id: 2, name: 'Banana', price: 55 },
  { id: 3, name: 'Pineaple', price: 55 }
]

Upvotes: 1

Views: 127

Answers (4)

Harry Theo
Harry Theo

Reputation: 784

It is true that you don't need to use a library to effectively delete properties of an object though if you want to use lodash here is an example of how you would do that by using the .pick method:

let pickedFruits = [];
for (let i in fruits) {
  pickedFruits.push(_.pick(fruits[i], ["id", "name", "price"]));
}

where pickedFruits will be the new array of objects each having an id, name and a price property.

Upvotes: 0

Akash
Akash

Reputation: 4553

You can just iterate through the object using forEach and delete the unwanted fields with the plain old delete operator.

This method cleans your current object, Without the need for a new object to be defined.

fruits.forEach((val) => {delete val.qty; delete val.status})

Upvotes: 2

Nikhil Aggarwal
Nikhil Aggarwal

Reputation: 28455

You can do it without using a library too.

Use Array.map

var fruits = [{ id: 1, name: 'Apple', price: 55, qty: 3, status: 'ripe' },{ id: 2, name: 'Banana', price: 55, qty: 4, status: 'ripe' },{ id: 3, name: 'Pineaple', price: 55, qty: 2, status: 'ripe' }];
let result = fruits.map(({status,qty,...rest}) => rest);
console.log(result);

Upvotes: 2

Eddie
Eddie

Reputation: 26844

Without any library, you can use map and destructure the object.

var fruits = [{"id":1,"name":"Apple","price":55,"qty":3,"status":"ripe"},{"id":2,"name":"Banana","price":55,"qty":4,"status":"ripe"},{"id":3,"name":"Pineaple","price":55,"qty":2,"status":"ripe"}]
var result = fruits.map(({qty,status,...r}) => r);

console.log(result);

Upvotes: 3

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