Javascript algorithm to find elements in array that are not in another array

Question

I\'m looking for a good algorithm to get all the elements in one array that are not elements in another array. So given these arrays:

var x = [\"a\",\"b\",\         


        

Answer 1

Maybe jLinq can help you?

It lets you run queries like this against javascript objects.

For example:

var users = [ { name: "jacob", age: 25 },  { name: "bob" , age: 30 }]
var additionalusers = [ { name: "jacob", age: 25 },  { name: "bill" , age: 25 }]

var newusers = jLinq.from(users).except(additionalusers).select();

>>> newusers = [ { name: "bob" , age: 30 } ]

It's a bit overkill for you at the moment, but it's a robust solution that I was glad to learn about.

It can do intersects, unions, handle boolean logic and all kinds of great linq style goodness.