fork download
copy 
  1. Array.prototype.duplicates = function() {
  2. 	return this.filter((x, y, z) => {
  3. 		return y !== z.lastIndexOf(x);
  4. 	});
  5. }
  6.  
  7. // retornará somente os valores duplicados do array
  8. console.log(["js", "php", "html", "js", "css", "php"].duplicates()); // [js, php]
Success #stdin #stdout 0.03s 17132KB
comments ()
stdin
copy 
Standard input is empty
stdout
copy 
js,php
https://ideone.com/sorfs9
retornar somente os valores duplicados de um array
language:
JavaScript (SMonkey 60.2.3)
created:
3 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!