Javascript 面向对象编程定义接口的一种方法

//定义一个接口函数
var Interface = function(interfaceName,interfaceMethods){
	if(arguments.length!=2){
		alert("Interface expected  2 arguments,one is for Interface Name, and the other is the Array for methods ")
	}
	
	this.interfaceName = interfaceName;
	this.interfaceMethods = new Array();
	for(var i = 0;i < interfaceMethods.length;i++){
		if(typeof interfaceMethods[i] !== "string"){
			alert("Interface constructor expects each method name to be passed in as a string");   
			break;
		}
		this.interfaceMethods.push(interfaceMethods[i])
	}
}


//检查对象实现接口函数的情况,可以实现多继承，第二个参数为对象数组
Interface.CheckImplements = function(object,interfaces){
	if(arguments.length!=2){
		alert("Interface expected  2 arguments,one is for Interface Name, and the other is the Array for methods ")
	}

	for(var i=0;i,i<interfaces.length;i++){
		//alert(interfaces[i])
		if(interfaces[i].constructor !== Interface){
			alert("the interface expects to be created from Interface")
			break;
		}
		var interface = interfaces[i];
		for(var j=0;j<interface.interfaceMethods.length;j++){
			method = interface.interfaceMethods[j];
			if(!object[method]||(typeof object[method]!="function")){
				alert("object for the method '"+method+ " ' is not found for Interface '"+ interface.interfaceName+ " '")
				break;
			}
		}
	}
}