js help functions

gistfile1.coffee

window.log = (obj) -> if window.console then window.console.log(obj)

// usage
// var x = 42;
// var map = function (x) { return eval(x); };
// alert(f("x $x", map));
window.f = function (s, map) {
	return s.replace(/\$(\w+)/g, function (dummy, v) { return map(v);} );
};


jQuery.fn.blank = -> this.size() == 0
jQuery.fn.present = -> this.size() > 0
jQuery.fn.trim = -> $.trim(this.val())
jQuery.fn.texts = -> 
	texts = @.map -> $.trim($(@).text())
	texts = texts.get()
	texts.join(" ")
jQuery.fn.ids = ->
	ids = @.map -> $(@).attr("data-id")
	$.unique(ids.get())