ElementAt

Description:

This method takes an index as an argument, then returns an item related to its index.

Sample:

let items = ['One', 'Two', 'Three', 'Four', 'Five', 'Six', 'Seven', 'Eight', 'Nine', 'Ten'];

let itemElementAt5 = items.asEnumerable().elementAt(5);

console.log(itemElementAt5);

Description:

If collection is empty or index is out of range an exception will be thrown.

Sample:

try {
  let itemElementAt5 = empty.asEnumerable().elementAt(5);
}
catch (err) {
  console.error(err.message);
}