JavaScript: リストを配列のように扱う(for Chrome5)

NodeList.prototype.js

(function extend_NodeList(proto){
	if(Object.defineProperty){
		Object.getOwnPropertyNames(Array.prototype).filter(function(prop){
			return typeof Array.prototype[prop] === 'function';
		}).forEach(extend_by_array);
	}
	function extend_by_array(name){
		if (name in NodeList.prototype){
			return;
		}
		Object.defineProperty(NodeList.prototype, name,{
			value : function() {
					return Array.prototype[name].apply(this, arguments);
			},
			writable : true,
			enumerable : false,
			configurable : true
		});
	}
})(NodeList.prototype);
// document.getElementsByTagName('a').filter(function(a){return a.host!=location.host});