array.select() in JavaScript

Question

Does JavaScript has similar functionality as Ruby has?

array.select {|x| x > 3} 

Something like:

array.select(function(x) { if (x > 3)  return true}) 

Answer 1

There is Array.filter():

var numbers = [1, 2, 3, 4, 5]; var filtered = numbers.filter(function(x) { return x > 3; });  // As a JavaScript 1.8 expression closure filtered = numbers.filter(function(x) x > 3); 

Note that Array.filter() is not standard ECMAScript, and it does not appear in ECMAScript specs older than ES5 (thanks Yi Jiang and jAndy). As such, it may not be supported by other ECMAScript dialects like JScript (on MSIE).

Nov 2020 Update: Array.filter is now supported across all major browsers.