Example JS Module example.

module

// module... 
// encapculates the properties of the function
// returns the function
String.method('deentity', function(){

  var entities = {
			quote: '"', 
			lt: '<', 
			gt: '>'
		};

	return function(){
		return this.replace(/&([^&;]+);/g, function(a, b){
			var r = entities[b];
			return typeof r === 'string' ? r : a;
		});
	}
});

document.writeln('&quot;This is the test &gt;&gt;&gt;&gt;....&quot;');