alias: forEach(fn, [context])
Iterates over each element in the collection passing it to a callback function.
The callback is passed two arguments: the element and its index in the collection.
The context of the callback function is that of the collection unless specified otherwise as the context
argument.
var shapes = Pablo();
shapes.push(Pablo.rect());
shapes.push(Pablo.circle());
shapes.push(Pablo.ellipse());
shapes.each(function (elem, i) {
alert(i + ' ' + elem.tagName);
});