iMetro

var nums = [1,2,3,4,5,6,7,8,9,10];

// $.each is a simple foreach helper
$.each(nums, function() { if(this % 2 === 1) { log("Found an odd number"); });

// $.grep is a filter for a list
var odds = $.grep(nums, function() { return this % 2 === 1; });

// $.map is a projection of a list
var labels = $.map(nums, function() { return "Number " + this; });