JS Boilerplate for accessing long property chains

gistfile1.txt

Object.prototype.getChainedProperty = function(str) { 
	var t = str.split('.');
	var value = this;
	for(x = 0; x < t.length; x++){
		if(value[t[x]] === undefined){
			return undefined;
		}
		
		value = value[t[x]];
	}
	return value;
}

var a = {  b : { c : { d : 1 } } };
console.log(a.getChainedProperty('b.c.d'));

var k = {}
console.log(k.getChainedProperty('d'));