javascript apply方法
JavaScript的每个function对象都有一个apply方法
          语法如下：funtion.apply([thisObj[,argArray]])
         功能说明：将一个函数的对象上下文从初始的上下文改变为由thisObj指定的新对象，用来模拟多态

/**method 声明**/
function Object1(name) {
        	this.name = name;
        	this.fun1 = function(){
        		alert("this is first method !");
        	};
        	this.fun2 = function() {
        		alert("this is second method !");
        	};
}
function Object2(name) {
        	Object1.apply(this,[name]);
        	//Object1.apply(this,["hahahhah"]);
}

/**method 调用**/
        	var o2 = new Object2("china");
        	o2.fun1();     //alert("this is first method!");
        	o2.fun2();	   //alert("this is second method!");
        	alert(o2.name+"==================apply method!");//alert(china=============apply method!);