Filtering a key-value pair from an array of objects using Typescript

I am working with an array of objects containing elements such as position, name, and weight.

const elements = [{ position: 3, name: "Lithium", weight: 6.941, ... },{ position: 5, name: "Boron", weight: 10.811, ... }, { position: 6, name: "Carbon", weight: 12.0107, ... }]

What I want is to create a new array containing only the values of the 'position' key from the original array.

const resultArray = [3, 5, 6]

Can someone provide me with a TypeScript method to achieve this desired output?

Answer №1

const newArray = arr.map(item => item.name)

After receiving suggestions from Mathyn, I decided to provide a detailed explanation of the functionality and rationale behind this code snippet:

The Array.map() method iterates through each element in an array and executes a provided function on each element. It then returns a new array with the results of calling the function on each element.

Refer to MDN web docs for more info on Array.prototype.map()

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