prototype.js

一个可以简单实现模块的拖曳、锁定、最大化、最小化控制的示例

var Class = {
//创建类
	create : function () {
		return function () {
			this.initialize.apply(this, arguments);
		};
	}
};

var $A = function (a) {
//转换数组
	return a ? Array.apply(null, a) : new Array;
};

var $ = function (id) {
//获取对象
	return document.getElementById(id);
};

var Try = {
//检测异常
	these : function () {
		var returnValue, arg = arguments, lambda, i;
	
		for (i = 0 ; i < arg.length ; i ++) {
			lambda = arg[i];
			try {
				returnValue = lambda();
				break;
			} catch (exp) {}
		}
	
		return returnValue;
	}
	
};

Object.extend = function (a, b) {
//追加方法
	for (var i in b) a[i] = b[i];
	return a;
};

Object.extend(Object, {

	addEvent : function (a, b, c, d) {
	//添加函数
		if (a.attachEvent) a.attachEvent(b[0], c);
		else a.addEventListener(b[1] || b[0].replace(/^on/, ""), c, d || false);
		return c;
	},
	
	delEvent : function (a, b, c, d) {
		if (a.detachEvent) a.detachEvent(b[0], c);
		else a.removeEventListener(b[1] || b[0].replace(/^on/, ""), c, d || false);
		return c;
	},
	
	reEvent : function () {
	//获取Event
		return window.event ? window.event : (function (o) {
			do {
				o = o.caller;
			} while (o && !/^\[object[ A-Za-z]*Event\]$/.test(o.arguments[0]));
			return o.arguments[0];
		})(this.reEvent);
	}
	
});

Function.prototype.bind = function () {
//绑定事件
	var wc = this, a = $A(arguments), o = a.shift();
	return function () {
		wc.apply(o, a.concat($A(arguments)));
	};
};