DRY and Pythonic jQuery?

Apparently, groovy:spring:java as jabs:jquery:javascript. As if jQuery wasn't short enough already.

Jabs lets you write this jQuery code:

jQuery(function() {var $ = jQuery;

$("[default_value]").blur(function() {var self = $(this);if(self.val() === "") {self.val(self.attr("default_value"));}}).focus(function() {var self = $(this);if(self.val === self.attr("default_value")) {self.val("");}}).blur();});

By typing this:

$ [default_value]:blurif @value === ""@value = @default_value:focusif @value === @default_value@value = "".blur

HAML tactics FTW.