filter

var newArray = [1, 2, 3, 4, 5]

// filters callback function, takes two parameters,
	// element is the current element in the array.
	// index is the current index in the array

newArray.filter(function (element, index) {
	// filter now loops through each element in the array, just like a for loop. Checking whether the current element passes the test below.
	return element > 3;
});

// newArray should now equal [4, 5]