What is the best way to utilize .some() in determining if a specific property value is present within an array of objects?

Question

What is the best way to utilize .some() in determining if a specific property value is present within an array of objects?

I have an array filled with objects, each representing a individual heading to a movie theater. These objects include properties like Name, Age, and Hobby. If there is at least one person under 18 years old, the variable censor should be set to true.

Despite Tim being younger than 18, my code below currently returns false. Am I not using .some() correctly in this situation?

var persons = [
    {Name: "Joel", Age:25, Hobby:"Fishing"},
    {Name: "Michael", Age:31, Hobby:"Astronomy"},
    {Name: "Tim", Age:12, Hobby:"Video Games"},
]

var censor = persons.some((person) => {person.Age < 18})
console.log(censor) --> false

javascript arrays object exists any

Answer 1

Answer №1

Make sure to include a return statement in your callback function to prevent it from always returning false,

You have two options:

var filter = items.some(item => item.Price < 50)

or

var filter = items.some(item => {return item.Price < 50 })

Answer 2

Make sure to include a return statement in your callback function to prevent it from always returning false,

You have two options:

var filter = items.some(item => item.Price < 50)

or

var filter = items.some(item => {return item.Price < 50 })

Answer 3

Answer №2

That's

let underage = persons.some((individual) => individual.Age < 18); // <-- no curly brackets needed for the condition

replaced with {individual.Age < 18}

Answer 4

That's

let underage = persons.some((individual) => individual.Age < 18); // <-- no curly brackets needed for the condition

replaced with {individual.Age < 18}

Answer 5

Answer №3

You must eliminate the brackets.

var people = [
    {Name: "Joel", Age:25, Hobby:"Fishing"},
    {Name: "Michael", Age:31, Hobby:"Astronomy"},
    {Name: "Tim", Age:12, Hobby:"Video Games"},
]

var filter = people.some((person) => person.Age < 18)
console.log(filter)

If you prefer to keep using brackets, then you should insert return in the code:

var filter = people.some((person) => {
  return person.Age < 18
})

Answer 6

You must eliminate the brackets.

var people = [
    {Name: "Joel", Age:25, Hobby:"Fishing"},
    {Name: "Michael", Age:31, Hobby:"Astronomy"},
    {Name: "Tim", Age:12, Hobby:"Video Games"},
]

var filter = people.some((person) => person.Age < 18)
console.log(filter)

If you prefer to keep using brackets, then you should insert return in the code:

var filter = people.some((person) => {
  return person.Age < 18
})

What is the best way to utilize .some() in determining if a specific property value is present within an array of objects?

Answer №1

Answer №2

Answer №3

Similar questions

Switching perspective in express with Pug

Bulma Steps failing to advance to the next step despite clicking submit

Tips for positioning a sticky div underneath a stationary header

What is the best way to ensure that each service call to my controller is completed before proceeding to the next one within a loop in Angular?

Is it possible to utilize axios in Vue while utilizing CORS in the API?

Using HTML and CSS to create interactive icons that change color when clicked, similar to how a link behaves

Breaking up an array object into two separate objects through JOLT transformation

Is it possible to ensure that an asynchronous function runs before the main functional component in React js?

How can I display the output from Geocoder in a text box using the ArcGIS JavaScript API?

Avoiding duplicate clicks in Onsen UI Navigator.Avoid duplicate clicks in

Having trouble with Angular UI Select functionality?

What could be causing the error I'm encountering while running the 'net' module in Node.js?

Using JSTL tags may result in returning null or empty values when making Javascript calls or populating HTML

Which is better for your website: SSG vs SSR?

Errors are caused when attempting to install third-party JS plugins using npm within a foundation project

Implementing an API route to access a file located within the app directory in Next.js

Issue with Vue.js: Textarea not functioning properly within a v-for loop

The onload function on the iframe is triggering twice in Internet Explorer 11

How can I transfer a JavaScript value to PHP for storage in an SQL database?

Why do browsers fail to cache Java scripts (Ajax) properly?