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;
            }
        }
    }
}