Question

0

133

Views

Does JavaScript provide a way to build a new collection with just one property from another collection?

In C#, I can do the following:

class Item
{
    public string Name { get; set; }
    public string Email { get; set; }
    public string Phone { get; set; }
}

Item[] Items = new[]
{
    new() { Name = "Bob", Email = "Bob@domain.com", Phone = "555-5555" },
    new() { Name = "Carl", Email = "Carl@domain.com", Phone = "555-5555" },
    new() { Name = "Ted", Email = "Ted@domain.com", Phone = "555-5555" },
};

IEnumerable<string> names = Items.Select(i => i.Name);

The last line builds a collection of just the names from Items ("Bob", "Carl" and "Ted").

Is there a way to do the same thing in JavaScript without writing a loop and building the array yourself?

about 4 years ago · Juan Pablo Isaza

1 answers

Answer question

0

Answer question

Find remote jobs

Accepted Answer · 2022-06-25T05:10:43.141Z

There is a similar concept in JavaScript and it is called the map :)

let details = [
  { id: 1, name: 'John' },
  { id: 2, name: 'Steve' },
  { id: 3, name: 'Mike' },
  { id: 4, name: 'Ericson' }
];

console.log(details.map(detail => { return detail.name }))

0

133

Does JavaScript provide a way to build a new collection with just one property from another collection?

1 answers

0

Find remote jobs

Andres GPT