JSFilterRejectExample.js

var cars = [{make: "Honda", type: "truck"},{make: "Cadillac", type: "sedan"}, {make: "McLaren", type: "coup"}, {make: "Infinity", type: "coup"}];
function reject(array, iteratorFunction) {
   return array.filter(iteratorFunction);  
}
var noCoups = reject(cars, function(car) {
    return car.type !== "coup";
});

// or numbers reusing 'filter' to reverse the effect of filter (only push items that return false)
var numbers = [10,20,30];
function reject2(array, iteratorFunction) {
   return array.filter(function (item) {
       return !iteratorFunction(item);
   });  
}
var lessThan15 = reject2(numbers, function(n) {
    return n > 15;
});